A (simple?) adjustment to how status works in the game, but why not make it so that if you are currently affected by a status, you cannot get the status again until the status wears off/is removed?
This would prevent the infinite loop related deaths regarding freeze/sleep (making it so that being hit while frozen/sleep will never make you re-frozen/asleep unless somehow timed to hit just as the counter disappears) and repeated shock infliction via Voltaic Tempest or permafreeze via Shivermist Buster.
Why not just make the status occur once and not reset the counter/re-inflict the status until it wears off first?
This would be a massive nerf to the vaporizer lines and firestorm. Most of those don't require a nerf.