Just throwing this out there, take from it what you will... a few people are calling this game a WoW clone, it's not a direct clone, I would say it takes what works, which is what Bioware are great at, but not a clone. Besides which, many of th modern classics do this.
I give you, as an example, God of War.
God of War took almost all it's mechanics, gameplay etc. from Devil May Cry, even right down to collecting red orbs and using them to buy abilities, and yet it's more highly praised than Devil May Cry. So who cares about this? No-one.
There's an interesting theory that everything is rehashed, that all gameplay has been borrowed from somewhere. WoW itself borrows alot from Diablo. True, this is the same company, but I would guess that even games like Ultima inspired certain aspect of Diablo itself. Unless it's a 100% rip off (which, since Bioware have stated many, many times they want to emphasise story, we're pretty sure it's not) then I don't see any problem with this.
Oh and I might also add that items, as far as I'm aware, are reflected by your level, rather than grinding for them. Just another thing to consider.