I would recommend to change only the Unload skill :
- Initiative cost from 5 to 4
- Grant it additional range of 300 up to 1200 (only for this skill not for AA)
- Additional shot 9th as a blast finisher (so you could combo it with a Black Powder)
This changes would make P/P more viable and fun to play. It would have a bit more dps and ability to gain stealth with BP combo which is needed in my opinion.