OK... so support team is slow. I'm going to summarize now:

Devs know the Cosmic is only granting 1 power and 20% fury, instead of " ..." for each ally that is alive.

Devs know the transforming silvers effect is only working on the first turn, instead of each turn.

Devs know that the Cosmic can be disabled by passive disable effects, which shouldn't happen. (This is apparently, according to the testing done "over there," why the Cosmic fails to grant immunity to crave sometimes.)

There are (vague) plans to fix the Cosmic... although I was not given any sort of timetable for when that might happen. Could be in the next patch. Could be three years from now. Could be never.