The Prestige Raid sets alleviate some this burden
They come installed with a Mod of the ability the lack most in (iirc, or on the piece)
Like Warlock gets more Mobility/Resilience
Titan more Mobility/Recovery
Hunter more Resilience/Recovery
Also that's why people are chasing sets, there's a reason certain sets cater to an ability.
I think Hunter who lacks the hardest in Recovery has a recovery set on Io or Titan, not sure
Then you can add mods if you get to add more Recovery
So there's thing there to balance, but a mess to work out properly with certain things blocking you from doing so