If a new rawcritics server was to be pup up, a modded minecraft war server with guns, planes, and industrial craft, and redpower. I think it'd be really cool and not many servers that have this set up or near it are not real good ones to play on. I think it would draw in alot of players but something you would need is an installer or a .minecraft folder they can download with.
Of course I'd also love a technic pack server if buildcraft was removed (it creates alot of lag in smp and can drain up maps quickly AND IT INTERFERS WITH IC :C ) Also maybe remove some of the more 'magical' aspects of the Technic pack (those obby pillar thingys) and it would be 500% better with pvp in it
Edit 1 (I had a moment of ideas that I hoped to squeeze in before someone read this)
Or another of my favorite ideas would be Tehcnic pack like I explained but with guns (SDK said he would be integrating it with Bukkit fyi)
FOR DAS PVP- Maybe have 4 pre-made teams that can elect a leader. Maybe 2 or 3 at the beginning because it will only be starting up. You can be independent or belong to a team. Each team would fight for control of resources and towns. So three teams (my personal favorite) that have a nicely sized capital each. Then there are about 10 mines and uhhh lets say 7 towns to fight over in Wars along with any player made towns and factories that belong to a faction. You can also take it from an independent person if they don't belong to anyone (this would force people to join a team to protect their places.) You can only take over an enemy's territory if you declare war and then you would have a (3-day?) wait period before you can start fighting! The resource mine would be resupplied (hopefully) every 2 weeks or ON RANDOM. With war with the Technic pack you could use balloons to get over walls! (maybe bomb people?

If it isn't griefing and during a war I dont see why not, you can use reinforced stone!)
Just imagine the fun of a war server with Technic pack and guns >;D