That's a long post to respond to.
You're pretty hopeless, but since I'm bored at work responding to you gives me something to do.
KDA Discussion:
One of the first things I said was that your KDAs actually are NOT that bad... reading comprehension ftw. But I also said that it is because you continuously go to late game which is easy to see when you have averages of 12+kills and 12+ assists on multiple champions. One thing that I was told a while ago was that having a KDA (Formula: (K+A)/D) of 3 or greater means you are doing pretty damn well. I kinda suck actually and most of mine are in the 2s. I have only a couple champions that are 3+. These averages tend to work themselves down when you play a ton of games, though.
Doing some quick math on your stats, all your games played combined, your KDA is 3.4, which is great! In fact you have 35 champions with a KDA of 3 or greater. Only 32 with a KDA of under 3. This means you are actually winning your lane and participating in team fights most of the time. You SHOULD be winning most of your games with these numbers, but you are not. This means too many games are going to late game OR you don't know how to carry OR you don't focus objectives OR a combination of all 3. Take the trolling & AFKrs and bullshit out of the equation, everyone gets those, you will also benefit from them being on the opposing team, you should still win most of your games.
For your information, here are your current champ KDAs ordered best to worst:
As you mentioned, you agree focusing on a couple champs is probably a good idea, so I won't get into this too much other than to say that 2k Normal games doesn't mean too much if you spread them across every champion. That's only 20 games per champion and you really need to grind out many games in a row with the same champ to hone your mechanics. Swapping champs makes it so you never develop good muscle memory for abilities and timings.
Summoner Spells Discussion:
Ghost vs Flash: Now you're being stubborn. How will you ever know if Ghost is holding you back if you refuse to try the alternatives? Apparently the majority of the LoL community must be doing it wrong. Get in line and follow protocol or else you are just hurting yourself. Sure, you might be winning your lanes and have pretty good KDA *right now*, so why bother changing, amirite? Better to learn the standard shit now so you can actually compete later on. Flash is so much better at securing kills then ghost and flash allows you many other escape options that ghost would never allow. Stop being stubborn.
Also, Clarity? Really? You just want to be different, right? Stubbornness gets you nowhere. Take ignite or barrier or teleport. Don't be dumb. Why would you ever consider Ghost+Clarity on Kassadin, it doesn't even make sense. Sure, he is mana starved at first, but you cripple yourself later on. Teleport or Ignite is so much stronger. Also, Ghost does nothing on him, yes, his Ult is like a Flash, so why bother "wasting" a summoner on Flash, right? Well, Flash allows you so many more possibilities like using Flash+R to instantly jump 1/2 a screen away and nuke the shit out of somebody. What reason is there to run Ghost at all? Kass doesn't need to walk faster. If you are avoiding Flash due to his R then you may as well not take ghost either. Logic.
Jungling Discussion:
You kinda did say you don't counterjungle, at least this is what I read:
I don't do smiteless red/blue just because i've always done blue/wolves/wraiths/red/gank. It's what i'm used to and comfortable with. I don't jungle very often tho.
What assumptions have I made here? You say you play passive and basically clear your entire jungle side before even THINKING about ganking. I was telling you to be more aggressive and fuck them up sooner. Playing it this way means the enemy jungler will also be level 3-4 and gank and you haven't prevented anything whereas counter jungling early can really set him behind and keep your lanes safer for longer.
Insults @ Me:
Take what I say with a grain of salt, I'm just trying to point out some things based on the numbers and what you've said. I am in no way perfect or even good or great at this game, there is plenty for me to learn and improve on. I only have 285 normal games played btw which is what it took for me to get level 30. Basically I have only played Ranked games since then. I had to grow and learn a LOT. While you played 2k games in normals, I have my 2k games in ranked, not much difference really except I happen to be gold and am continuing to go up. You can say it took me over 1500 games to get out of Silver but might want to hold the insults until you are actually beyond Silver yourself.
A couple of my known weaknesses are: 1) I can lose patience at times which leads to bad decisions, I constantly remind myself to wait for the opportune moments and don't force fights. 2) I can lose focus in team fights, I believe it relates to lacking patience, being patient & calm allows me to keep focused. If I go into a fight sometimes I develop rage or tunnel vision which means I'm not allowing the fight to develop and am trying to force things. Sometimes its best to reset, step back, let things settle, go back in, etc.
I have focus'd MF and Akali yes, but I currently do not, as the meta shifts I tend to pickup new FOTMs. I basically stick with 3-4 champs as long as possible. Right now its Tryn/Aatrox/Nunu/Udyr/MF/Akali. Basically I only ever want to Top or Jungle but I have MF and Akali for Bot/Mid if necessary (I also take Aatrox mid if we get AP top), I also don't support often but seem to do well with Nami and Janna. I have 56 games with Tryn, 50 with Nunu, 44 with Aatrox, and 22 with Udyr. I use Gambit's motto: Play what's broken. In the recent past I was specializing in Volibear & Nasus. (Udyr wouldnt be considered broken but I just like him and played him a shit-load in S2, so because of the new skin I wanted to pick him back up)
Sometimes things work, sometimes not. I have some champs that I was trying to get good at but just failed. My Elise record is horrid, even though she is OP I just suck with her (3-12), I also wanted Quinn to work really badly when she came out, I liked her but just couldn't secure victories, I'm 8-18 with Quinn. Quinn single-handily took me from Silver I to Silver IV. See, I can be stubborn too... But I gave it a fair shot, realized it just wasn't working and likely got back up with MF or Akali or Kha Zix or another OP champ at the time. Point is, I tend to play a very limited champ pool but overtime the selection changes.