Yeah, the cooldown factor is one of the biggest problems with rentals so far. When/if that gets changed, I think people will be more likely to want to rent out their cards. As it stands now, you can have someone rent it for a day, not realize they need to keep a balance in their credits, and break it. Or even just rent it for the weekend tournaments and then break it.

Glad it's still growing, though. That's a good sign!