Helminth Invigorations should be outright removed. Having RNG buffs on RNG selected frames is a recipe for toxicity.
During the next operation/Eidolon run/anything hard or with leaderboards, why would I want to run with someone who doesn't have an optimal buff on an optimal frame? Sure your Rhino has a 300% strength Roar buff, but that other guy's Rhino now randomly has a 500% strength Roar buff. Someone who has spent time putting forma into a frame is instantly outclassed by someone who got lucky RNG.
Remove the system, the entire thing is a terrible idea. It's going to make finding optimal squads for higher level content that much harder.