It sounds like you follow the scene pretty well, other then the subreddit, mobafire articles, and here, where do you see things like that? Like.. is there a forum for people discussing pro level matches and community? I've looked here and there, but never seem to find a good central source for info.
I watch the game a lot more then I can play, and I have a shitty computer to play it on. I just always feel like information is going around about the pro scene and I only hear about it later when it becomes big news.
Team liquid has a really nice league section as well. They are mainly a Starcraft2 site, they are also have dota2 and league subforums though. The community there can be alright as well since it's usually heavily moderated.
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Edit:
Played a couple ranked games today, TF twice, Shaco once, Morde once. It really pisses me off how retarded some of these players that I'm playing are. I mainly play low to mid plat players. I'm currently gold 1, but I still gain ~30 LP per win so I should probably get to my promo series tomorrow unless I tether at 90LP or go on a losing streak. But anyway with Shaco for sure, and usually TF it's better to split with those champions mid to end game because TF can just ult into a fight whenever and Shaco is pretty much worthless in 5v5s (at least once there is an oracles out) so he's better splitting all day.
It's ridiculous though how often people bitch at me to group. "We need to group as 5 to win" and I'm just like no, I'll split as TF, draw one away, you guys engage and I'll port it" Nooope, my whole team comes to my lane. Or a game I was a shaco, I'd split push and multiple times I would draw the enemy mid lane player to have to stop my split push yet somehow my team couldn't win the 4v4 even though the mid wasn't there. Like...raaaage. Then I'd get bitched at because I should be grouped as 5. All I can think is, I drew away the strongest player on their team and it's still my fault.
Usually I don't vent much, but man, it's annoying how people still don't know how split pushing works even all the way up to plat.
Also, speaking of TF, I took a break from playing him even though back in Season 2 I'd play him quite a bit. I can't remember why I stopped playing him though, such a fun champion. Long range poke, on demand stun, unlimited mana (for the most part), semi-global ult. You can catch everybody out of place when playing him. I've started going the whole boots of swiftness + lichbane as my first two items since that's mainly what you see in LCS all the time. That or Sheen into Zhoynas depending on the enemy team comp. It's super fun how fast you are. Kite kite kite, chase chase chase. Gets even better if you grab the twin shadows. more movement speed and those wraiths that slow, lol. Love it.