Hard to say. Mythos has some of the addictive Diablo formula down. It's bogged down by having so little in the way of development resources. Some would be inclined to forgive some of its problems, with the expectation that if it starts up well, said problems would go away.
I've been following it for a while and it's getting pretty hard for even me to give a shit about it, though.
The overworld transformation was kind of cool, but their skill system still sucks, they're still afraid of giving people respecs (possibly because they expect to make habitual skill retraining a cash shop thing), and the game is still a godfuckingdamn black box with unreliable damage reporting from the character screen and no skill damage tooltips and no damage log (though the latter is on the wish list), and so on.
A lot of it is very, very "work in progress." Crafting is presently broken in favor of weapon users, while it is pretty much brokenly fucking lame for casters.
I could go on, but, well, Bal doesn't give a shit.