I've been dying to do a Star Trek R.P. with Deanna Troi. One where my character is a security officer a bit fucked up from the Dominion War, but he's a celebrated hero so the Federation can't shuttle him off. He would have a very 1950's sort of "Real men don't give a damn when they kill people" vibe. Made worse by his Klingon side and how they as a warrior culture don't seem to deal with like PTSD. He's be the son of two half breeds, a half Betazoid, and a half Klingon, the Betazoid side would give him telekinetic powers, but nothing ridiculous just like a few pounds. It could be alot of fun to go into and unlike generic "War torn solider" R.P.'s their alot of potential for depth because of his race and how he tries to act and carry himself. It would potentially be romance between Troi and my character, but I'd like it set at a somewhat realistic pace.
The other big idea I have is one I've been searching for forever. I wanted to do a Doctor Who R.P., one where Amy and Rose are left behind. In Old Who such things were common, every companion leaving wasn't some massive universe ending thing, one day he just wouldn't show up. The two have a hard time adjusting to being just a normal shop girl and kiss-o-gram worker again. They seperately decide to move to London. In typical who luck they end up as room mates. A year or so later their land lady dies, and they notice an ad in the paper, "Seeking Companions". My character would be a scientist who was a prodigy, multiple masters degrees, on things like particles physics, time etc. He'd be brilliant, but scatter brained as hell, as in forget to eat. So his companions/room mates would get a vastly reduced rent,eautiful apartment in order to basically keep him functioning. Light cleaning, make sure nothing went bad in the fridge. He'd pay for groceries and such. Either he'd be rich off of some patents, or U.N.I.T. would be paying him a ridiculous amount. He'd have his own history, and a reason to work for U.N.I.T. against hostile alien forces. Like the Doctor, but at the same time human and obviously different.