The new expansion maps: many people (myself included) find it a boring slog, while some think it's not so bad.
It's most definitely a slog. There can be no doubt about it. The locusts are by far the worst of it, though. There's also a lot of loot to be had, so for reward-driven players, the slog may be worthwhile for that reason alone.
It is a slog, and it annoys me, but much like DC that doesn't sour me to the whole experience. There are many good things, such as exploration in and of itself, much more tileset variety, the Ladelman and what's-his-name dialogues, The Dude, tootling around on jet skis, the expanded backstory/lore, the new toys and character mechanics, etc.
The most fun I've had so far was actually genociding the natives on their home turf, and those have also been the most challenging fights. I was chowing down on drugs like they were Halloween candy, abusing corners like a bitch, and could not defeat the chieftain without deploying traps (traps were my "final extracurricular skill" this playthrough, not a core skill of the build). That's on Normal, though my build is fairly unoptimized, especially with the expanded mechanics.
