Nah, if wipe, then everything.
Change LUA APIs (heck, why not remove LUA and replace it with Javascript), and randomly change the recipes of the items and the flight model again, so people cant even transfer knowledge to the afterwipe.
Fairness for new Players.
And we need more Limits. Its not good that everybody can create unlimited BPs. We need a skill for this. 5 Tiers. All 5 Tiers at Level 5 and you can maintain 25 BPs. When you create a new bp over your limit, a random core bp will be deleted. And the next slot with an item next to it.
And the same for LUA..or JS. Implement Script Slots!
And disable clipboard. No lazy copycat!