Thankyou for your replies lady and gentlemen.
Flossy makes a good point - there is already a Mission Indicator. Now we just have to shut up those perpetual, boring posters.
Innominate's post may be offered tongue in cheek but that is actually the attitude of some Mission Maniacs. I have yet to see an 'open' mission that achieved anything very much. The usual result is a massive overkill operation which SOMETIMES results in a field capture after about an hour of complete chaos during which the other sides capture about 3 or 4 fields left undefended.
I specifically exclude Hangtime's missions from that, but even he is sometimes overwhelmed by the undisciplined hordes who like to go along on these things.
Missions are great when they are planned by someone skilled and carried out by just enough people needed to get the job done. Sadly there are few of those.
I guess I will just have to squelch anyone who posts MISSION, MISSION! more than twice in any one minute. Tedious, but there appears no option.