I don’t know exactly how this would work but if someone has a monster that they don’t want and someone else wants it, they should be able to donate it.

Hi and Welcome,
Your not the first one to suggest this you can trade monsters but very slow cell by cell other ways wouldnt be good for SP (losing income) and very easy to exploit

a great thing if you could directly send eggs from the warehouse to other members / give away. but only with the option that the member receiving the egg must be at least one month in the team
to prevent the abuse of the function (team change to get eggs)