The Haitian's ability of mental manipulation basically does what your first power would do. I'm sure he could create false memories if he wanted to, but who knows...?
The ability to amplify other abilities? That sounds interesting, and possibly very Heroes-ish.
That could easily be done with the illusion ability, methinks. I've never found multiplicity to be all that interesting, to be honest...
Of course it's never been shown on the show, but it's possible that the Haitian could implant false memories. Just a theory of mine that has no founding, but it would make more sense if he could...
Gender: Unspecified Location: IN YOUR MIND...MUWHAHAHAHAHAHAHA
Is that what they are calling that power, because the correct term for it is psychometry, clairsentience is the ability to "feel" and "know" things it's more like the "scientific" name for sixth sense or intuition. I've seen some psi related sites that are now using the two interchangeably, but in the past clairsentience didn't usually involve touching just feeling.
I'd like to see somebody who can subconsciously modify their genetic structure to give them any power they can imagine, or somebody who can cause others powers to turn against them. A power that would allow somebody to transmit a virus similar to the legacy virus, causing their powers to keep escalating which at first would appear to be a boost in their abilities but will eventually burn them out because the virus decreases the body's resistance to the power while the power itself grows and grows until they die would be interesting IMO.
Gender: Unspecified Location: IN YOUR MIND...MUWHAHAHAHAHAHAHA
Oh yeah I forgot about that power I got so into the virus one, but Peter is too uber and they need somebody who is just as uber to taunt him and say so your like me well not really and then proceed to kick the living shit out him with powers he has never even dreamed of. Can you tell I hate Peter?