Besides ships, Beli should be used to produce other things as well. C-box came up with a few ideas, see if the Community can add to it.
-Ship Upgrades
1. More Storage
2. Longer Range Guns
3. More Gun Mountings
-Special Weapons
Zoro had demon swords, and other more powerful swords. Mihawk had a unique sword
called Yoru which is arguably the most powerful sword in the whole series. Maybe 'sacred' objects like these should be spent on with Beli, maybe they should be earned through other means. Zoro did buy one of his demon swords though.
- Dials
Theyre from Sky Island, so they shouldnt be available in any of the zones we're in yet of course.
- More Stat-points?
I didn't see how people get higher stats, level up, get stronger ect. Maybe we spend Beli on that too?