One unwelcome thing I have noticed that's made the jump over from the previous game is XP Rewarding Boxes. Thankfully it's just the odd occasional locker here and there but when you've expanded your game in include a crafting system and upgrades use more components other than salvage just having these items that do nothing but give you XP just seems a little pointless. Still better than the past game where hunting was one of those activities that offered nothing of substance of than more XP in a game that showers you with it at every opportunity. Hopefully by Revenge of the Tomb Raider Crystal Dynamics find a balance between rewards the player and engaging with all they systems in place.
Wait, where? I've never encountered a box that only gave XP (they always give resources, though sometimes I'm capped. you should see them pop up on the right hand side of the screen. Red = you're capped on that).