[quote=@BrokenPromise]
[@ClocktowerEchos] But really, does jump-in ever end well? Like, ever?
[/quote]
Yes. On another site, [@Tergonaut] hosted what is essentially a jump-in RP. There were no character sheets, just going off one another’s posts and crafting a collaborative story. He started it off by introducing the scene with one sentence, and it became one of the marque RPs of the site in a few months.

Ultimately, it depends on your playerbase and motivations. Just like any other RP.