A "little bit" doesn't cut it.Exp still exists for PVE, same with the tech tree. It allows you to tweak shit a little bit.
If it's a zone defining power curve it makes a level less game redundant. If zone 1 is the zone you appear in at the start of the game and you can't go to zone 5 because you have to gain exp to "tweak" your stats then it's no different then in WoW where you are in a level 1 zone but you can't play the level 30 zone because you don't have the level 30 stats or gear and once you are powerful enough for zone 5 zone 1 becomes stupid easy. Same with getting to level 30 then going back to that level 1 zone.
It's sugar coating bull shit.