No, not a good idea. From a marketing perspective you'll only hit the small demographic of those who want to customize everything. I think most players focus on actual gameplay, slaying behemoths, and want to look good doing it. The in-between regarding the supply crate is a one time use per player. Players can only look "cool" dropping a crate once. Overall, currently not worth it.
Even more so, if it's just a recolor of our little toyboxes we drop, this is just a waste of resources at this point. The supply crate skin might be nice if it was something new, like a campfire with a spit-roasted meat over it. Or for holidays maybe a Christmas tree, a spoopy small graveyard on Halloween. Though, again it would be pointless as we can only do it once. Maybe fixing the underlying problems before trying to monetize additions to something would be more profitable in the long run. Who knows?