1. I would say 270 arc, a monolith's weapons are almost that if you look at how they turn, and its meant to arc out of any point on the sphere rather than shot from a specific point.
2. Yes as the allied flies are not being targeted specifically, its just say all enemy fliers suffer this effect unfortunately.
3. It seems pretty good, but I don't think I would personally take one over a tesseract vault. But I can't really comment as I have not tried it out in game, suffice to say it is one tough cookie though!
Me: To be honest im amazed there isn't a chaos god of not revising or at least chaos god of procrastination
MidnightSun: There will be, when enough people do it. Y'know when the Eldar were all engaging in their hedonism and Slaanesh ripped open the Eye of Terror with his creation? Slaanesh will have NOTHING on the God of Procrastination, and his vile minions will carve the galaxy asunder in a thousand year reign of blood.... Tomorrow