I dont know where all those very positive comments come from. Is it because its free? Passive skill tree / active skill (not too many skills here tho, could be more) / crafting system very inventive indeed, i miss such customizability in other games. Else? Three acts, pretty much like Diablo 2 in size, not too many original monsters (a lot of copy/pasted models with changed effects), three unique bosses, SO MANY other things literally taken from D2 like monster abilities, quests, design of the maps among other things, but still Diablo has a lot more to offer.
Go play Torchlight II, this is proper H&S that actually feels somehow new.