The paper “The Case for Strong Longtermism”, by Hilary Greaves and William MacAskill, goes into deontic strong longtermism in section 6. Hope this is useful.
Not really because that paper is essentially just making the consequentialist claim that axiological long termism implies that the action we should take are those which help the long run future the most. The Good is still prior to the Right.
But thank you for replying, in hindsight by reply seems a bit dismissive :)