I have a question about something that is regarding the cool down you have after an image is approved.
Right now, one has to wait 24 hours to get an upload slot back even if all images are approved.
Since I see no harm for Danbooru, I wanted to suggest that yu get an image slot back when one image is approved.
There is the caveat with flagging this approved post, but I don't think that it should matter because an image can get re-approved pretty fast and you have already gained the trust by at least one approver for the upload. Flagging is also extremely rare nowadays, much less on approved posts. So there is this point as counter, but I really don't think it puts any harm on Danbooru.
The other advantage would be that good uploaders can help Danbooru to get faster a larger Database and don't have to wait 24 hours to upload their next batches when they are already approved.
So the upload limit would still be capped to at least 50, but good uploading would get rewarded better. So it wouldn't be broken, like the old system was.