Well, may be it would be helpful to categorise bugs in OSM.
Unfortunately this will not answer, who is responsible to care about the reports. I feel there is an increasing amount of reports “missing something”. And it seems to me most such reports originate from “sniffers” who are redundantly running around, finding single missing objects, but have no idea about the state of the mapping progress, neither are willing to map themselves.
At least I can say I feel bothered when I’m the only person to map a village in situ and then comes a guy and reports “here is a missing fountain” – anything else - while I’m about to trace house numbers.
Who will care about such message ? Since I’m the sole real mapper out there, only I could do it. But I will not – I have to map, since I feel responsible for villages and hamlets of about 10k people and their environmental streets. One fine day, perhaps, the fountain will interest me, but for navigation the fountain is irrelevant, as irrelevant as the shapes of buildings.
I’ve found regions, where you can wait long time for potlatch because of the huge amount of buildings to be loaded, while nearby many countryside roads are missing.

Using OSM bugs as a personal reminder is somewhat out of my imagination.