I like the changes overall, but the numbers are going to need to be tweaked. We'll have to wait and see how much rockets do (I'm guessing 75-150 damage, depending on how they want the hitbox to be. A low 75 would need to be large to guarantee consistency during quick engages while a high 150 would need to be small to make it much harder to use to engage with unless you're on top of someone.) to know how she'll play exactly, but atm I can see a clear issue with her DM.

With the new DM you'll be getting 2 seconds of protection every 10 seconds. With how D.VA currently works this'll push the ability into a disengage tool. Basically you'll fly in, rocket someone, finish them off, DM off into cover, fly away when boosters are back up. This ends up doing the exact opposite of what Blizzard seems to want. Instead of only being a peel tank she'll now only be a dive tank (basically a higher burst Winston that blows up if you sneeze in her direction).

I'd personally like D.Va to be adaptable. Allow her to switch between a peel and dive tank, without making either one too oppressive. There are two ways to go about this. You could A) Remove or drastically reduce her DM lockout (If you cancel DM early you can't use it again for another second.) This would improve her effectiveness versus inconsistent burst DPS heroes (Pharah/Junkrat/Tracer, and allow her more outplay potential versus Tracer bomb or Zarya's Graviton surge.) You could also go the simpler route and B) change the 2x to 1.5x making 2s=3s of DM charge or even 1.75x to make it 2.5s (which seems like the sweet spot imo.)

Without one of those changes I just feel she'll become either garbage or incredibly unhealthy in all modes of play.