If you not saw our last ideas, please read them.
https://www.games2gether.com/endless-space-2/ideas/140-goal-driven-diplomacy
https://www.games2gether.com/endless-space-2/ideas/313-political-agendas-of-political-parties-and-other-empires

That's the idea. Every smart player\AI has a goal and principles. Every 10-15 turns in your empire or in neutral territory starts negotiations.
For intra-politics: you trying to explain your goal and priorites for a next time: economy, acceptance, trading, FIDSI-improvement, war readiness.


This will give you small, but necessary perk: like -10% fleet provision\maintaince, +5% for all incomes\-5%  etc
Like elections.
Why we need a intra-politicial agendas - to reconfiguring the ecomomy system and for the rebuilding of the economy to the needs of the moment on micro-level.
macro-level - political parties.
Foreign politics: you're trying to explain your agendas (not hidden),principles and goals. Also you trade in real-time with AI and players.

New idea - long-timing deals.
Example.
I need a hyperium. Sophons need Dust. So every (2-3-4-5 etc) turn i'll pay 200 Dust and for exchange he'll deliver me a 20 stacks of Hyperium


Also you can deny your visiting this events.