Nah, choosing based on strength isn't interesting. So what if you're a dragon? You can't even draw or play the guitar with those claws.
In that sense, humans, mages, or elves are more appealing, although the latter in Heroes 4 turned out to be somewhat wild, and I don't want to be one of them.
Then, of course, it's better to be a human. They have intelligence. We choose from pikemen, crusaders, archers, and squires.