With SCOT, we have the potential for a bit more flexibility than steemd can provide. Within reason. There have been requests for Steem to have eternal payouts, but this is limited by memory/resource requirements. Maybe it can be addressed now that MIRA has been released, but I won't hold my breath.
I like holger80's solution to this: steem forever (rewarding old posts) with beem. But it is a bit of a hack. And for it to really work well, it'd require a front-end to interpret and unify all the upvotes and related upvote replies into, then hide stuff ... kinda clunky.
What if you could natively promote a SCOT post beyond the current payout period? What if you could also buy extra payout periods after the initial payout? And what if you could automate this for certain posts? Combine the three, you've potentially got "forever payouts."
There would be a few benefits:
The neat thing is, if the post doesn't really get any more votes after a while, the author would have to yank it from the promotion automation or else it'll just end up costing them more than it earns.
How about posts that are public, but every time a company accesses a bunch of them, the API makes their CEO's account click 'like' on one of them at random so you get a notification.