I think widows venom mine should do 100 damage or 150
Unfortunately, this is not the best place to provide suggestions for game features. The technical support forum is where players life myself and Blizzard Support Agents (who are different from the developers) to lend a hand for players who have technical issues (such as disconnections or game crashes) with Overwatch. I suggest posting your suggestion in the general discussion forum.
If in the event you are unable to post in the general discussion forums, please check this troubleshooting guide.
Pretty stupid I have to verify I have the game even tho I am talking about ranked.