[quote=@Roman]
I am floating the idea in my head of a secondary character explicitly for hip-fire, spaff-on-the-wall posts while I continue working on my Constantine re-write in the background. Something for easy no-pressure fun, where currently I may or may not ever bring Constantine to see the light of day.

The main gimmick/condition of this sheet would be I'd [i]only[/i] be writing collab posts with other players, or cameos/features in other player's plots; there would be no solo posts of this character. This way, I get to write, the IC becomes a little more interactive, and I can crossover with anyone who fancies it, but I don't have to worry about quibbles like 'direction' and 'plot' and 'story' so much. 

Naturally this would require activity in the IC and a functional and present player cast to be sustainable/feasible, so it's up in the air, and I also need to consider what kind of character I'd bring for a second sheet, but wanted to see if this was something other players/the GMs would be open to.
[/quote]

I'd first point to this

[quote=@Half Pint]
I want to encourage player interaction as much as possible while also leaving enough breathing room for you to write your own overarching stories that can be independent from your adventures with other heroes, if this is what you want to do.
[/quote]

There's not, to my knowledge, a rule that says that you have to have a solo story. And sometimes its the solo story that gets in the way of interaction ([i]speaking for myself, all my prior attempts at Aqualad failed because it would take me 10+ posts just to get out of Atlantis[/i]).  I do see a possible downside being when your collab partner(s) may hit a period of inactivity ([i]I've had so, so many collabs over the years that never saw the light of day for this[/i]), but I think that there is room for what you're describing.