Hiding invis mobs

CMB, could you possibly hide the invis mobs? seeing as we have no use to see them? In alot of zones I've been to, there are alot of invis's running around, and I can see no reason why we would want to see them.
Also, Is there a way "rem" some lines in the alert filter to specify which zones the mobs are in, instead of one long steady file? i went to eqatlas and cut and pasted every noticeable mob, but not sure which pages I miseed. easier to decipher if I can rem out the lines with the zone names in them,.
Thanx,
DieAlot