I haven't been on a server that plays more Administrator sound bits. I know custom sounds plugins, but I don't want players to have to download a whole bunch of sound files when they connect. And I don't think they add anything to gameplay. If these sounds already exist in TF2 however, maybe we can look into it, though in general, I'd rather not have too much audio spam... we have already a lot of people on voice chat

If you have specific examples, though, that helps.
I know there is a killstreak plugin, but I think it gets boring pretty fast in TF2. It's not that hard to get a killstreak in TF2... demo+medic/kritz = fun