Plotbunny dilemma.

Arrgh, this is tricky. I'm working on my potential plot suggestions for my merry_smutmas requests, and the problem is that my desired-to-read post-DH plotbunnies are also those I'd like to write. What do you think? If I request a plotbunny that I also want to write myself, will that kill my desire to write it in the end? And if a fic like that is written by someone else will it seem copycattish if I go on and write another one?