After a bit of experimentation and tinkering tonight, it appears that one can use their website to create threaded conversations on (and likely other portions of the ) using the IndieWeb syndication strategy of POSSE with backfeed of comments using and Brid.gy. I’d outlined the process using Twitter in the past, and the same principles seem to work well for Mastodon.
MEMO

TO: app developers considering and other related apps and interfaces

Perhaps spend a day or two to add Micropub support to the platform first, then your app could potentially be used to publish to ANY website/platform that supports the W3C spec.