We already have something like that with the ValueBlock in the RSS feed. Here's the one from the last episode of BowlAfterBowl. Any sats sent to the show get split based off of the ValueBlock in the RSS feed. 

Some apps and services will add their own split or fee on top of this for their "cut" of the sats. 

25% makeheroism@fountain.fm
25% marykateultra@fountain.fm
24% Spencer
24% DuhLaurien@getalby.com
1% BoostBot
1% isobot@getalby.com
1% Podcastindex.org