It is currently possible to always buy cheap 0 fame crew in coop by:
- make a tiny ship that just holds a few crew
- give all of your other ships to player 2 (the game now thinks you have very few crew members)
- hire crew and transfer them to the big ships until they are all full
- have player 2 give you your ships back and done, you now have way more crew than you should have.
In the save where I did this, me and my friend now both have so much crew that hiring a new one requires about 2000 fame while we only have 600 fame.
A possible fix would be to: make fame limit your total crew count at any point (so players could not transfer crew or transfer an entire ship if that would make your crew count go past your fame limit)