MostlyHarmless42
Adventurer
Another common change is make the +/- damage equal to your proficiency: -2/+2, -3/+3, etc.
What I just posted basically. We decided to make the damage equal to 2x proficiency though as it gives the player just a little more incentive to make the gamble. In truth both feats as written aren't actually as absurd as some make them seem. There have been many threads discussing the math. It's just that we personally felt the scaling seemed to make more sense and was less of a penalty at lower levels (especially because we start our games with a feat at 1st level).
The only true feat I actually think is problematic of the two is Sharpshooter, and that is specifically when COMBINED with the Archery Fighting style. Again, the fighting style really should've have just ignored the first level of cover rather than have been a flat bonus. It's so odd that it ended up being a normal bonus too, given that it's basically the only class feature that functions that way in the game more or less. I'm still surprised it made it past playtest.
I also still maintain that it is weird that one can combine all the effects of sharpshooter for absurd feats of archery. Technically the thing I described earlier does require the archer to see the guard in the tower, but even that is a topic of discussion that has been argued to death ad naseum.