ban user from a subforum

[Watched]

i was wondering.. if it's possible.. to create a hack that modifies the ban system to where you can ban them from the whole site.. or.. if you should choose .. to ban them from a specific subforum.. for instance, you have a troublesome member that likes to go into a specific forum.. lets say General for this conversation.. and likes to go in there and spam all over the place.. then go back and use the edit button to lie his way out of getting trouble w/ the moderators.. yet behaves himself in every other subforum.. typically miserable users would handle this guy great.. or even a error 404 ban temporarily.. but.. if you were just wanting to ban him from that specific subforum he keeps causing problems in.. how would someone go about doing that w/o compromising the rest of the ban system covering the whole board and w/o compromising inferno warning system 1.3? ... or alternatively.. give him a .. "time out".. which imo would also be.. comical.. if there was an addon to forumhome which would display a list of users currently in "time out".. .. (just an idea). where a time out acts the same as banning the user from specific subforum(s).