I would be happy with 1 of 3 changes. A.) Make 9K track again B.) Make K in PPK or 6PK safe C.) Make 46P+K safe or pushback on block Any of these changes would help a lot. Mainly option B
I'd also be happy if 1P was a SDS (well, fatal stun) on crouch to punish incessant ducking. May even make the move a viable alternative to 6P.