Unless we get to travel across the world, i would also like to see focused enviroment rather than lots of variety ...
I mean, it dont really make sense, does it? How can you have desert, just next to the swamp, just next to the snowy terain, just next to the vulcano ...
Dunno ... seems variant enough to me. :-/
We got sandy beach, forest, rocky terain, wetlands, swamp, caves, mushroomy underdark, crystalic underdark, underground lake, ruins of buildings, and as Flooter pointed out Grymforge felt volcano-y enough to me aswell. :-/
Would be nice tho if Mountain pass (or some later part of the game) would bring us to some place where would be snow, so our Druid in his Polar Bear form would stop complaining that he feels baked like a pie. :-/
But adding various enviroment just to have various enviroment seems like a misstake to me. :-/