Dynamo and H-3
Mostly because it would be nice to have more options for Tacticooler (maybe Gold with Chumps that isn't CDS) that could possibly create new options for weapon comps and map niches with H-3 being with a midrange support weapon which is something we hardly see because most of the notable Support weapons are short range (Zap, NTri, HEdit ig?), maybe shaving off 2 frames off it's endlag after a shot/shot velocity buff could be nice to keep up with the fast pace of the game
With Dynamo, I believe with another two buffs it could almost reach it's potential, especially with a more consistent burst paint that could help some weapons (ex: Rapid or Dread) be a better match with it, an AoE weapon like Dynamo that could hit over walls with it's Horizontal (with less gaps) and Cooler support would be very welcoming, the issue would be the weapon dealing with Charger, but that I don't really mind