I've been playing around with Dead Heat Squigly for a bit now and i've come across the issue a few time snow, where i am unsure whether her special ability (BBs and SMs become unblockable when she is below 25% HP), because it's pretty hard to tell 26% HP from 24% on a glance. Maybe give characters with HP-percentage based abilities an indicator on their health bar, where their abilities actually will trigger. That may be harder to implement though, so another easier fix may be making these abilities an actual "buff" that is displayed beneath your HP bar. This would be useful for Dead Heat Squigly, G.I. Jazz and i think Raw Nerve Painwheel off the top of my head, though there may be more.