Name registration is a bit weird idea. The problem is that some players can and probably will register their names but most won't mainly beucause it's paid. It won't really help to trace the real troublemakers. Maybe another clean logfile, with connects/disconnects/name changes would be more usefull here. In that case server admin could easly find nickstlealer and punish him problerly. AFAIR it costs 12$ per months for regular players and twice as that for clans.
Remote managament could be done by a modified webrcon (
http://frenchfragfactory.net/ozh/archives/2005/01/22/quake3-webrcon-web-based-rcon-interface/) or something similiar, so that's not a big problem.
"High Council" idea looks interesing but players who would have access to rcons must be choosed very wisesly. It wouldn't be nice to see some offended "member" kickin' random people from server just for fun or because another member pissed him of
Ladder, stats - idea is good, but how can it be done? I'm not sure how 1.32 community will look like but currently we have few independent servers. If it had to be done, it should be common for all servers. I saw that VSP allow to get log files needed to build statistics via ftp. It could be used to make common players stats.
PM system - i haven't seen it workin in any mod, it's rather q3 dependant thing and might be hard to implememnt in mod only. I'd like to see it working some day, as well as a possiblity to ignore/silence player both for whole server (by an admin) or for players (/eg_ignoreadd nickname/clientnumber?).
VSP i'm using for statistics isn't perfect, but still it helps sometimes

It seems it catches users by their name chances ignoring their IPs. With 1.32 it's possible to find players by their GUIDs as well.
I'm not sure, but does 1.32 log date and time properly? I haven't got time to check it and on 1.31 it looks funny, cause instead of normal date and time in logs i get time in minutes after server was started what makes that VSP can't log played games properly.
Adam: hardware bans works in Counter-Strike, Call od Duty, Medal of Honor, Enemy Territory (which is game based on q3 engine using PB as well). I'm not sure if it works in Q3 but i do know that it can be cheated as well

Personally i don't think that we really need to punish anyone till the end of work. Temporary ban should do the job.