Bitsearch.to lets you upload anything, and its searched by jackett. Same with the sister site solidtorrents.to. Solid actually has a python plugin for qbittorrent so its even easier to search/discover.

Theres r/trackersignups and the telegram channel r/opensignups migrated to of the same name.

From what I have read on the upcoming implementation on i2p in qbit, I do not forsee it being adopted by the core torrent user base. The main issue I have with it is that while you can download from clearnet peers, you are only able to seed to other i2p peers. This completely eliminates any adoption by anyone using private trackers. Its not like the guys in brazil are going to jump through an extra hoop to hide their ip since they never needed to in the first place, so they can be ruled out for adoption as well. What I really fear is that its going to create a completely unnecessary schism in the userbase with a sort of ‘leechnet’ walled garden of i2p users which would hurt the greater availability of seeders. I also haven’t gotten a straight answer from anyone how ports are going to work in i2p, since normally its imperative to have a forwarded port in order to be a full participant. Unless i2p users can seed to clearnet users without issue, I am going to be worried about the impact on torrent health as a whole.