IMO, since HUmar already has access to Pyscho Ravens and having the 2nd highest ATP in the game, SS being exclusive to them isn't the greatest of ideas. SS already kind of balances itself out since you need SD to have it even compete with PRs, which makes it not as great of a choice when playing solo or without a force. If a nerf were to be considered, I don't think handgun range would be a bad idea. Having a combo-unlocked MR-type weapon for males still makes it worth having around. It's definitely one of the more broken items, but when you have things like PRs, STA, Combo-unlocked DM, yas 9k with special, and other things, it kind of just blends in with the rest of the OP items on Ultima.
That being said, it REALLY doesn't need buffed in any way like I've seen some request. No special/atp/ata changes please.