the suggestion is not to take sendings away from PCs, but to make them take one baublium with the idea behind it being that sendings will be more valuable and important due to an actual resource cost and not just open mic night. I'd be in favor of allowing association PCs or gov. PCs to use favor/etc they gain to pay for sendings also.
an alternative could be to just increase the gold cost of sendings
an alternative could be to just increase the gold cost of sendings