I am looking forward to the expansion, though it sounds like the aesthetic customizability of the hero seems to have been reduced. In King's Bounty: The Legend we can chose from 3 heroes and I can name myself how I want to - in the expansion, there will, apparently, be only one hero choice (though three classes - but one hero means one possible look) and there is seemingly a pre-set name.
Of course, the gameplay is ultimately much more important and I am sure the expansion will deliver there!