Basically, what the title says.
A lot of people seem to be complaining about the learning curve and how getting whooped by difficult bots and experienced players will drive new players away. I've seen a lot of complaining about the tutorial as well. All those arguments seem to forget that FH is going to have a campaign.
From what i understand, by the end of the campaign we will have spent a few hours building skills against (hopefully) progressively more difficult enemies and spent time playing as at least three different heros.
Naturally multiplayer matches will have their own things to get used to, but doesn't anyone think the campaign will be a pretty decent primer for all that?