Let's have a Democractic Interest Check. 
I got three ideas for NRPs. Some might be new to you, or they might be something old. 
Point is, you decide. 

Here's the discord : https://discord.gg/pqPf6Sh (The Turquoise Room)(Shitposts are welcome)

[hider=Stone Age-Fantasy][img]https://img00.deviantart.net/fc54/i/2010/257/7/b/help_a_brother_out_by_povorot-d2ypqif.jpg[/img]
- STONE AGE ERA
- Emphasis on your "Nation's" shamanistic and animist ties to a spirit world.
- Different spirits influence and sometimes actively try to enter into the mortal world.
- Different nations have different patron spirits and compete with others for resources/knowledge/spirit's favour.
- "Nations" are towards the smaller scale, numbering in the hundreds and focusing on a pre-early agrarian cultures.[/hider]

[hider=Aliens in my Castle!][img]http://orig01.deviantart.net/7cb4/f/2012/055/9/5/by_heresy_distressed_by_jamga-d4qs58j.jpg[/img]
- MEDIEVAL/LOW FANTASY ERA
- The NRP's main plotline is the meddling of extra-terrestrials on a medieval technology world. 
- Players will RP as kingdoms/republics/empires/city-states/etc: competing for favour and technology from off world alien species.
- Moderators will take up the roles of overarching 'aliens' who bestow technology advanced equipment.
- Another plot line emerges between resisting the 'aliens' or willingly comply with them for power over the world.[/hider]

[hider=Post-Apocalyptic Factions]
[img]https://pre00.deviantart.net/4b17/th/pre/i/2017/243/3/c/shoot_first__ask_questions_later__by_mackhai21-dblyq5j.jpg[/img]
- MODERN/POST APOCALYPTIC ERA
- Set in a world post-global environmental disaster/pandemic.
- The focus of factions is on smaller groupings. Numbering in the tens generally. Competing for survivors, resources and equipment with other players.
- Encourages players to 'team up' and combine their numbers. Though still retaining direct RP control over their survivors. 
- I.E. Two players team up, P1 has 30 survivors, P2 has 20 survivors, combining to make a group of 50 survivors. P1 has a personal cache of 5 assault rifles, P2 has a personal cache of a armoured car. The team also shares a group cache, to which they can share items from their personal cache with the other players in their group. Thing is though, do you trust them with it? Do they trust you?
- Players can trade/raid/teamup/betray other players, while taking care of their group. Building compounds and safehouses, collecting valuable resources and equipment, fighting off threats from the wilderness.
- Will probably be set in a pacific-northwest fictional state.[/hider]