IMHO the amount of work to (slightly) modify SMF to make it work, is not worth it.
There is such a low number of requests, that we can easily lock the ones that are fulfilled, or simply remove them.
I think the natural 'flow' of a topic (allowing bumping) is enough to keep the mods 'entertained'.
All righty. I know you're against locking stuff generally so that's one reason I wasn't going for that option.
But maybe we should just make that one of the "knowns" of the suggestion forum - if your suggestion is fulfilled your topic will be locked![SUGGESTION FULFILLED - TOPIC LOCKED]