Annoying to who? the leechers? who cares? lol.
I've wanted that feature myself, an auto PMer telling the users why they get kicked off. We need an upload manager that can kick off users based on slots, not only 0of0. I hate those broadband users who only leave 1 upload slot open. What happens is that the one slot gets a dialup user or a throttled user connected, taking up that one available slot, leaving an endless queue behind. This is why users started giving up on MX a long time ago.. too much queuing, and I don't think that's only the leechers' fault, it's also the broadband users with 1 slot who don't think they are doing anything wrong.
I do from time to other use 0 of 0 when I am going to play games or need the extra 2k/s, and I don't want to leave the chatrooms, and I know some hosts run it when they host a chatroom because of the performance of the room is better without the throttles enabled, so I know that 0 of 0 has some legitimate uses, but I know most of the users abuse it.