The difference between projected textures on and off is too crucial on some dungeon bosses.

We were beating our heads last week in motherlode on last boss because I had them turned off and was regulary killed by his "pylon" spawning during intermission (not to mention flying machine bombardement). Managed to outheal it in the end but it was painful.
Now did it with textures on and everything was shown nicely on ground. Didnt even know there is range indicator on the missile so you dont have to run away like idiot. Why is such important feature hidden behind this?

Also, if you remember Argus fight, during add phase where they target one person and make the line of damage, you couldnt see them either without projected textures switched off. Not talking about spinning wheels, those were fine.