Forum OpenACS Q&A: Re: RFC: Avoid exposing object_ids in permanent URLs
If you don't want to break links when dumping and reloading your data, fine, either, ideally, take the trouble to make sure your object_ids don't change - it can certainly be done. Or not quite as good but still ok, install redirects from all the old to the new URLs, like openacs.org did for the 3.x BBoard to 4.5 Forums transition.
I also see no real benefit to having nice small numbers for Bug IDs. As a user of bug and ticket trackers I don't really care. On the other hand, as a programmer and admin the the fact that an object_id (aka ticket number) is unique system-wide across my OpenACS instance gives me warm fuzzies - as does the fact that using single simple sequence like object_id is very robust to programmer errors, etc.