In my opinion:
Buff No Mercy to 22-25sec so it can accommodate a full rotation and Hypervelocity.
Extend Continuation range to 6-8yalms as a quality of life.
(The hill I'll die on)Make Double Down cost 1 cartridge instead of two, it would just be a quality of life and a reduction in clunkiness for me and a lot of other people that is not a "skill issue".