Surely people could manage this though lol..I made a custom bukkit server over the past few days just to try some new stuff out on and just zipped my .minecraft folder and gave it to my mates to install to log on. Quick 12mb download and unzip it to their own .minecraft and it was done.
Thats what I asked the other admins today I'm going to have a play on my custom server to see how things go and report my findings to the team. Then if us as the admin team think its right for the server we will then ask the players for their opinions showing both the downsides and upsides of mods.