Well... I believe that somehow Lee can survive to season 2. That if you made all the right decisions he could be back, not as a playable character of course, but maybe for just a few minutes, make a brief cameo. Either that or as a zombie.
...After that note, I truly think it wasn't a great idea. They made you feel like Lee so much that when he died, it was like a piece of me died inside. Also made you feel bad because it made me feel like I left her alone and parentless. I can't see playing as someone else in the same story with Clem, or at the very least feel like I am actually who my avatar is.