One tough thing with feature requests is that most of the time we don't know what Fencer thinks about them and if he intends to implement them some time. And even when he says that he likes the request, it is very possible that after the request gets buried deep in the present board, everyone will forget about it.

It would be terrific if features requests could be entered, commented upon and followed in a system almost identical to the bug tracker. It would certainly be very easy to program, nothing more is needed than using the bug tracker page with a parameter, which would offer a different set of states, like Accepted and Refused by Fencer.

On the plus side :
- Knowing that they would get a feedback on their requests, users would certainly be encouraged to propose more feature requests.
- Fencer could use the system as a reminder of what he intends to do.
- Fencer could use it also to enter and track the improvements he thinks about on his own.
- People who look at the size of the feature request list would certainly be more understanding about why their own request isn't fulfilled asap.
- The transparency over feature requests would make a tremendous impression on the new users. I would be surprised if any similar site would offer anything close to that. Actually I don't even think that they are close to the current state of Brainking's transparency :-)

On the minus side :
- Knowing that they would get a feedback on their requests, users would certainly be encouraged to propose more feature requests.
- Fencer could see the system as adding pressure on him, like "hey, you accepted this feature request 6 months ago, and it is still not here". I recommend to make very clear that no deadline of any kind is implied on an accepted feature request, and that Fencer would keep any right to change his mind, rejecting a previously accepted request, or accepting a previously rejected one.