What game needs (better) tutorials?

Let me state up front that I thoroughly enjoy Marvel Heroes. That said, I find some of its mechanics pretty obscure. Like, costume cores. What the heck am I supposed to do with those? To be fair, I could probably find the answer on the game's labyrinthine forum, but since I play it ultra-casually and somewhat infrequently, I'm usually too busy enjoying the clickfest to tab out and search.

TLDR, this game needs a tutorial or two, in my opinion.

What do you think, Massively readers? Is there an MMO or an MMO-lite in your rotation that needs some in-game explanation?

TH

Path of exile really needs a tutorial on crafting and how to aquire crafting reagents.