Currently, trusts are only able to be called by the party leader and cannot be part of an alliance.
Letting other party members call trusts would be beneficial when parties split up and require different support. I don't see how it could be overpowered.
Allowing trusts in alliances could help fill in extra slots when parties are missing some members, but I see how turning three players into a full alliance could be overpowered.
Are there any plans to remove or ease either of these restrictions?