I don't typically have one specific outline but some general things that are always a "yes" for me:
-LOTS of lore/worldbuilding, regardless of individual post lengths. I love going into what makes the characters and the world they live in tick
-Cryptids/creatures of some sort, whether they're mains or just side characters. I'm always for having a Fucked Up Little Weirdo (affectionate) or two
-For sci-fi specifically, I'm slightly a sucker for the subtle cosmic/lovecraftian/eldritch horror. Make the characters an unwitting pawn in the game of some long-lost god or gods. make the magic system a little Fucked Up And Weird etc etc

....honestly any of the above and you've probably got me LMAO

In one sentence : A strong group RP with a gripping plot, memorable characters and development, and a stellar ending that would make us all want to expand on the world/setting on after.

What most RP’ers want at some point I gather. ☕️🫖

For me it would ideally be set in a high fantasy setting or a science fantasy setting of my own design.

Probably a long-running RP with a dedicated group of friends that are each sorta trying to top each others' shenanigans in a mostly-freeform RP with a loose collection of optionally re-occuring characters.

Which results in tons of naturally occurring worldbuilding as the characters make life a little more interesting for the NPCs.

This is how we end up with a tech-analyst with a pet mecha that thinks it's a cow befriending a demon which also happens to be the field-marshal's half-sister, while a wheelchair bound bigot befriends a human-phobic dinosaur-pilot by splashing wine on them thinking they could drink through their scales via capillary-action and because he saw a video of pilots getting showered in champaign once... and simultaneously befriending a speciest human that wanted to enslave all non-humans... oh, and he flashbanged the queen in her own palace to get her to stop tripping on LSD.

You may not have noticed, but I'm actually quite fine with whacky shenanigans and mission variables. Like... pairing a xenophobic bigot with a xenophobic/specist anthropomorphic dinasaur to flashbang a queen that has taken an OD on narcotics to knock them back into their senses shenanigans... Or dating a demon out of boredom between missions and making that an important plot point 4 threads later... using a character someone else created and just handed to me to run with.

Not like I actually planned any of this stuff 4 years in advance. So calm yo butt.

There were also a few outbreaks of zombies. HALO parachute insertion into the eye of a hurricane onto an actively erupting volcano to recover some nukes was fun... the GM pointed out they would be expecting us and I kinda tore into them on that:

We're making a pretty unexpected and dynamic entry as it is. We are a 3rd party faction, and the primary (friendly to us) belligerent is a rather shitty local Special-Forces operative that is already on the ground*.

If the enemy has the eye of the hurricane super-defended, then he is being beyond paranoid to the point of being borderline clairvoyant.

Anyways, the point is, we are doing an awesome insertion, under awesome extreme conditions, to stop an awesome weapon and deliver awesome justice within an awesome time-limit.
*And we are complaining?

On top of this, one of these complaints, is that someone on the enemy team apparently expects this level of awesome to crush their nuclear testicles like a legion of Chuck Norris... and he isn't crying for mercy yet, why?

I mean, the only way to make it more awesome, is that we mount horses before jumping out the back of the plane and perform a vertical cavalry charge from space, then escape by surfing sharks with frigg'n lasers strapped to their heads back to a secret underwater seabase manned by talking dolphin-waitresses. AND NOT ONCE DO WE DROP OUR MONOCLES.

Edit: Although we did not, in fact ride off into the sunset using sharks as surfboards, we did managed to hijack and sink an airship and then proceeded to hijack a nuclear missile sub and ram it into Skynet's heart.

I was also notified that Godzilla took this idea and ran with it:

@The Elvenqueen@Shu@Foster

Thank y'all for answering! I'm always so curious to see people's visions.