Too bad, because they'll be playing DOTA 2 initially in droves.
You act like you've never played DOTA at all. INT drop way down in relevance by end game, due to how riced AGI become. Its a pretty shitty feeling when one fed AGI carry can take out your whole team and you don't stand a chance and its definitely a flawed system. They need to implement some balance in DOTA2 with INT scaling and toning down AGI a notch.
It's not terrible at all. Maybe for cheapskates it'd be a problem, but for those of us that appreciate the time that these games soak up for us, $5 every couple of weeks for a new hero is chicken feed.
So yeah, what cle said above anyway, if you want it to be identical to DOTA, why are you getting so excited about it? I guarantee it won't be the carbon copy you're looking for.