Scale goes without saying; but now I'm trying to imagine what it'd actually be like. I'd guess the tac would take out most medium-sized towns. The heads of them could quickly fill a California-sized area.
Then you connect them with string and it's just huge mass of fibre across the sky, 50km wide.
I don't think I could get off if my partner was wearing these hideous things.
Or anyone else in the room for that matter.