What about an Insidious rework?

aerafield

Currently this perk sees no use outside of a few hook-camp builds.

My idea for a rework would be

"Every time you did 5/4/3 successful attacks with your M1 base attack, Insidious becomes activated. The next time you press the Ctrl button, your terror radius and red stain are removed for 30 seconds."

This would turn it from camping into a useful and tactical ambush perk