DVa, Hog, and Winston having lackluster and powercrept kits. They inherently lack so much utility compared to sigma, Orisa, and Rein.
Zarya, Orisa and Wrecking Ball are better because they can apply pressure with much less downtime compared to the bad tanks. Not to mention their ultimates are powerful, low commitment moves that don’t disrupt their play style.
Balancing Hog, Dva, and Winston to have flow, more utility, and less downtime is the proper way to make their playstyles relevant again.