You're still missing the point that you can just knock down the requirements of KSM while introducing 15 dungeons, while keeping the difficulty of KSM intact.
KSM presently granted at 8 dungeons done at +15 at both tyrannical and fortified? New KSM with 15 dungeons then also requires exactly that.
Point is there are trivially easy workarounds for KSM becoming harder "because" of the addition of more dungeons.