Since you're obviously not one of those guys who don't believe in weights beyond bodyweight (based on your log), have you ever considered power lifts? Like power press, cleans & snatches. I didn't read every page, but I browsed, maybe you do perform those lifts and I just missed it.
The power adaptions from these lifts will directly translate to striking and kicking speed/power.
The biomechanical equation for power is work(or weight) in physics they use mass/time, which implicates velocity. Striking and kicking (especially shooting & sprawling) with greater velocity never hurt anyone
well... except for the other guy.