Skate wise, carry longboard stuff. And not just Sector 9, but companies like Gravity, Earthwing, Landyachtz, Rayne, etc. The longboard scene is rediculous in BC and the sport is definately exploding. What I like to see in staff when I walk into a snowboard/skate shop are people who are knowledgable about a product, are approachable and don't really fit into the stereotypical looking snow/skater model esque type person.
Products wise, IMO, bring in mainstream-ish stuff, like Rome, Forum, etc, and have a small selection, then start branching out depending on customer demands. IE: if you have a high demand for Burton, bring that in. Or if you have a high demand for smaller more underground companies, bring those in. Whatever you do, don't bring in price point companies like 5150, Lamar etc, might as well just open a Sport Mart...
I think I mentioned this already, but PLEASE bring in educated staff, and staff who are willing to work. I think it would be pretty sweet if you had a bulletin board or something to post up about events and trips as well.
UUhhh, I think that's it for now. Though I'm sure I will babble more later, and not make a heck of alot of sense.