24theres no online feedback form, but there is a discord (to which you hate).
there's a trello/wekan board public I think that has some of these ideas in backlog, but the priority now I assume is getting stuff to work at 100% at all times.
as far as I know, they (the people behind the actual tf2pickup organization) want to have those features when they launch eu pickups, though that's quite a journey I hear.
I believe this is a reply to bearodactyl. Yes, the Wekan board that's public is managed by the TF2Pickup guys. To give you some context, these are two guys, who in their free time made a free service that's miles further than what's expected. If you look under the trunk (I encourage you to, it's open-source and well documented), it's an incredibly good system. The broader community has helped knock out a lot of important things from that board as well.
Support those guys if you're impressed: https://ko-fi.com/tf2pickuporg, seriously it's a ton of hard work and an overabundance of free time from really smart people.