See, to me, that last statement means a lot because I loved Pub Games. I think I'm the only person in the world that can say they "loved" Pub Games. I'm a sucker for Lionhead, so I'm sure I'll buy Heroes eventually. Especially if it ties to Journey. I understand you can only unlock Gabriel by buying Journey, which seems kind of odd since that game is months away.
I didn't have a problem with the games contained in Pub Games, just that they wanted $10 for something that you could do inside of the retail game. As a companion to the game and a pre-order bonus I thought it was a good idea.
There seemed to be a few characters that were only unlockable if you have Fable The Journey. I don't think it said names, just showed silhouettes of them.
And I just played a bit of multiplayer. It was more fun with another human, but nothing significant. After playing 3 or 4 bosses now I can say despite them all looking different, fighting them is basically the same. My character unlocks seemed to carry over, but not my gold. I joined midway through a boss fight and collected about 1/30th of what I would have earned from the whole level, so I just had to sit there for 4 minutes during the upgrade screen while the host did his character and the two AI characters. I also didn't seem to be able to change my character. As far as I can tell you'd need to ask the host to go to the character select area to change. I didn't have a mic unfortunately.
I do think that the game uses the Fable license pretty well. The enemies and characters are all very familiar to anyone who played Fable 3 and Bowerstone looks like its old self.