Yeah, I've been getting a lot of reports about the Miscreant cubes getting a little ridiculous. I'll probably remove the Vile's ability to spawn those guys unless they're actively trying to kill something.
While I don't think I'll just bring back the standard vanilla Archvile see sound, I do agree I need to make it more audible and distinct. I'll sort that out in the future as well.
Oh and I plan on making the Icarus Launcher more costly to use as well, that's actually been on the todo list for awhile now!