Just went into a minimal inferno to level up a weapon at level 25. Encountered two massive waves in addition to four or five normal waves, two pairs zenothtopes, a single zenothrope, a Neurothrope etc. and that’s not counting majoris calls for reinforcements. In my opinion, that’s a little much for a minimal. I had no problems managing it, but I could see how someone looking for a less congestive experience or someone starting out would be overwhelmed. Pretty much had to button mash my way through the whole operation which became a little tedious. 

Minimal should be an environment where people have the time and space to learn and master the needed skills for the higher level ops, not be overwhelmed and rely on button mashing to survive. Don’t make it a cakewalk, but definitely tone it down to the point where it’s a benefit to skill development for new or lower level players.

I'm 95% certain the AI director takes the level of the players, but not the level of the weaponry equipped.  Average @ 25 with white weapons is worse almost every time than Ruthless @ 20 with purple weapons.