Submit a request in the trac, then.
Posted under General
There's already an atom feed ( http://danbooru.donmai.us/post/atom ). If your reader supports filtered feed reading (which it really should if it's worth anything), you could set up a filter to just show results that include pool:[number]. I'm not 100% sure that the atom feed includes that but it should!
Subs are a bit like RSS but they're inside Danbooru, so if you're using an RSS reader they won't help you. But if you don't mind that, I think you can use the same format (ie. pool:[number]) to subscribe to pools.
スラッシュ said:
But if you don't mind that, I think you can use the same format (ie. pool:[number]) to subscribe to pools.
You can. I'm subscribed to a couple.
Search for pool:nnnn and you can get a feed for the individual pool or subscribe to the pools and get the rss for your subscriptions.