Speedster feels like it should be a player joker not a gun joker. as a gun joker it just feels very... strangling to any speedster build, and while player joker space is very tight I feel like speedster has a better feel as being there. Thats already where we have most of our speed up upgrades, thats where we have a lot of stat modifications, and importantly that is where we have glass cannon. Glass cannon is the closest equivilent I can personally think of to speedster, a legendary playstyle defining joker that boosts damage. now yes Speedster also increases firerate but at the same time, why not let that apply globally?
I dunno thats my 2 cents. maybe thats a terrible idea and would completely shatter game balance. Im going off of vibes here as a speedster user myself.