Also the recalibration system, but luckily it can pretty much be ignored until you are closer to end game gear score. I hate hoarding items and I don't know how they could change it other than to let you break down the item and save the stat/trait you want like an MMO enchant scroll or something.
Yeah, recalibration is a bit confusing and annoying. I have so much shit in my inventory that I need to sort through.
1. Guns always have 3 perks, and each slot is a unique pool I guess? It seems as though I can only move slot 1/2/3 from the first to the same slot 1/2/3 on the second. Armor is where it gets confusing, since each item can have 0/1/2 perks and it doesn't seem at all clear how moving them around works. You can never add a perk to an item with none to start with, that much is obvious. But moving from a 1 to a 2 or vice versa is a guessing game for me at the moment.
2. Once you move a mod to a new item, it's stuck there. So you need to be sure that the item you recalibrate is a keeper or else you could be going a long time before you find another item with that perk. I definitely won't be recalibrating my Patience perk to a new pair of kneepads until I have 450ish ones by a brand I want.
3. In addition to perks, you need to be aware of what is a super high stat roll. Like the flat roll for +armor has HUGE variance to the point where the low end at 30 can roll worse than the high end of early/mid-20's items. It's similar to the gear mod video where purples were shown to often be better than yellows.
4. Figuring out what is a rare perk and what is dirt common is annoying. Stuff like +15% elite damage, +20% armor regen, and other things that can appear on several different gear slots appear to be super common. Other ones like Patience (armor regen while in cover) not only appear to only spawn on one item type (knees in this case) but also are extremely rare. Hopefully someone makes a spreadsheet for them soon. I also don't like that weekly projects can ask for items which have a specific perk, like the one now that wants 5 "devastating" items. In my experience devastating is pretty damn rare and I could easily go 7 days without finding 5 of them. Plus it's a decent mod that I'd want to save at least 1 or 2 of to potentially use.
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On an unrelated topic, in case people aren't aware -- there is an orange air drop or a bright green gun case outside/near most if not all safehouses and they contain a couple good items plus a gun or armor dye. There's a bunch more around the world too, especially in areas with trees (SSE of White House, WNW of Lincoln Memorial, NW of the previous one on a dock, S of the West Potomac Park safehouse along the edge of the map where all the boats are, etc.). If you find a dye while leveling, make a note of where it was because they respawn every 24h.
Arekkz has a video if you don't know what I'm talking about:
The Division 2 Map | Interactive Map of Division 2 Locations has a few more, but some of theirs are the ones that just drop materials and not gear/dyes.
For an example of the green gun case, go to the Attic safehouse and look outside it for a small area behind a wooden fence with a ladder up to the roof. Cross some boards to the next building over and you'll see the green case on the ground there.
You can't get the dyes before L15, I assume to prevent people from creating and deleting characters to farm the WH one.