When are we going to get more developer revenue options?

Developers may charge the streamer to use parts of an extension.
That payment system would be handled all by you offsite from Twitch.

Hence it’s not on that monetization page as you handle it all outside of the Twitch Eco system

This sounds like gambling/a prize for a viewer?! Sounds a bit skewy. See also Extensions Guidelines & Policies | Twitch Developers sections 4 and 6

That should be permitted. Streamers are allowed to pay for extensions/features of an extension