How would the Peacemaker part work? People wouldn't STHU about "nerf Peacemaker" 24/7 when he was top tier, but those tools that were nerfed is what he needs to be good again except maybe the recovery on torpedo. So how do you buff him without causing the same outrage that got him nerfed? Feels like he'll get an exorbitant amount of complaints by default for being a (if he was strong) zoner.
Aside from buffing the hit advantage, I would not touch the torpedo. Kano knives to torpedo is the primary reason why Peacemaker was nerfed this severely.
I would explore reducing the cooldown of Eagly as well as the startup and recovery of the force field.
Eagly seems to have about four seconds of cooldown while the force field starts up in 61 frames, recovers in 60 frames, and lasts for two seconds. These numbers have to be facetious. LOL. You are much better off flawless blocking projectiles than activating the force field.
Once upon a time, these two special moves were over-tuned. Now they are under-tuned.
By the way, zoning is compatible with modern fighting games, but the zoning character has to do more than "pew pew", and there has to be some kind of execution/depth requirement.
I never bothered to learn Deadshot because I knew the first week of Injustice 2's release that he was eventually going to be nerfed down the toilet.
One of my favorite zoning characters of the modern fighting game era is Poison from Street Fighter 5, and NRS has done a better job with some of their zoning characters like Sektor and Shang Tsung in Mortal Kombat 1. I would like to see more original designs in future games.