Not sure how you plan on running things, but one of the things that drives me nuts on the current N54 team boards is all the crossover of fans from one team to another's board, specifically to talk trash. I'd like to see you and the moderators curtail that, and have each team forum be just about that team, and kind of for it's fans "only". Have a separate "Trash Talk" forum where all of the people that like to snipe back and forth can hang out and drive each other crazy, but leave the team forums clean of that junk. It comes down to the type of forum that you want to run, and how each teams' moderator elects to patrol things, but I think that setting it up this way from the outset will set the right tone here.
Also, can I suggest that you add a generic "Hockey Discussions" forum, where people can talk about hockey in general (systems, schemes, newbie questions) that don't really fit into a team forum, or the WHL itself.