It's hard to ask this question correctly I suppose. Basically, I want to be able to have a few mods that are level 4 OP, but other players to be able to still teleport and perhaps toggle the rain. Mostly though, to be able to teleport without easily being able to /gamemode themselves, if possible. It seems that it used to be possible (we used to be able to edit the exact buttons that would be available to the players- they would have magnet mode, toggle the rain, toggle the time of day and be able to teleport, but not be able to cheat).
The NEI config file (which is where I think it used to be available) is not at all the same, so I don't know how to do it now.
We are running FTB Infinity 1.7.10 if that helps any.