Easier said than done, as I already mentioned earlier the search only takes exact strings, as such without knowing what to search for the search feature is somewhat useless, for that matter we can't for example search for file hosts and file types / attachments either, it would have to be explicitly mentioned since links are a unique string each and attachments are not included in the search (although the latter of the two is not relevant here).
There is no unique string that is consistently used that could be searched for to get all the individual updates there have been since the OP was last updated, usually the links are posted as is, maybe with a small comment but without specifying it is an "update", and for the different "categories" (for the lack of a better term, e.g. SAW and COM) there are usually underscores so since the search only works with exact strings we can't simply search by the categories, someone out of the loop would have to go through the whole thread to really make sure to catch every single new game, version and fix, in particular if one doesn't even know what exactly has already been shared.
But even then, as I also already mentioned, chances are that not all of the links would still work at this point, so again it would be better if the OP is kept updated so it won't get lost, but at this point so much might be missing that it would likely be better to repost everything since the OP was last updated. Hence why it would be better if someone already in the loop could do it, then there might also not be a need to check every single link.
That also means someone must update OP every time the author makes new game (or even a new version of the game) . So, those guys who shared the links, must have access to redact the original post, and users must check it every time for updates and search the new game they needed instead of just checking this thread for new posts and links.
If there is an update then there is an update, there are already rules in place to prevent games from appearing too often in
Latest Updates, e.g. from what I recall it won't get bumped for fixes and there should be a limit. The changelog section exists to keep track of what was added so if everything is properly tracked and noted down it would be easier for others to take a look at the changelog when the OP gets updated rather than having to keep up with the thread (e.g. the current discussion would be irrelevant for the ones simply looking for updates, the thread would have to be regularly checked).
There are different roles each user can fulfill, and some of them rely on the reporting of other users, in this case reporting refers to something positive because it makes those who keep the OP updated aware of new updates, so in cases like this it could go on for so long that the OP might never be updated.