I would love to see a balance rework for DVA (because they didn’t re-work her, just buffed the S@#$ out of her) in which the Mech provides a %hp shield to DVA proper. By this I mean that the Mech functions a little like Ablative Armour (or how it used to function in reducing dmg).
In Mech form the Mech reduces her dmg taken by 75%, and the Mech operates like a shield (not unlike fenix while also affected by shield-based talents). This way, if she plays poorly, DVA hops out and has taken damage. But it also means that her jumping into and out of the mech doesn’t make her nearly invulnerable (comp is entirely why she is either extremely OP or manageable).