Tbh Bungie making special ammo versions of primary weapon types was a mistake. Why ever run a fusion, shotgun or sniper when a rocket pulse has better ammo economy and not only good single target damage but can be decent in ad clear?
Rocket sidearms are basically the baby versions of the pulses with less damage but with better ammo economy. The new recent special ammo handcannon is just a powercrept version of those rocket sidearms.
Only solution is to buff Fusions, GLs, snipers and shotguns because they just don't compare to rocket pulses. That or nerf rocket pulses into the ground to being the miniboss fighting weapons they should be, no-one should be pulling out a rocket pulse for boss DPS ever.
Primaries just need a 100% damage buff and Bungie nerfing specials which makes no sense will gain them more ire from the community. They can't afford it... literally.