ZenithPvP MadWarps maybe? Might be able to add a hook to team plugins. Those need to be on bukkitdev though, not worth the time otherwise.
Yeah hopefully also could you add when you type /go list it would say &7***Warps [AmountOfWarpsSet/AmountOfWarpsAllowed*** Then on the second line it list the warps like you have it atm if you do end up finding it that would help alot
Could you make a ticket for that? Then I have somethibg where I can look back at it. Actually a pretty nice idea.
timtower done http://dev.bukkit.org/bukkit-plugins/madwarps/tickets/17-mad-warps-added-with-teams-plugin/