Would MCU Winter Soldier and Ghost make a good couple?

Callouts

No, but I'd love to see them interact. They were both used as assassins of S.H.I.E.L.D. and HYDRA against their will.

Would be pretty cool if Ava showed up in the Bucky/Falcon show. If that's still happening

I don't remember ghost.

No. Ghost is too messed up even for Bucky.

They ate both messed up to insane levels so they would.

For some reason I thought you meant Ghost as in Jon Snow's dire wolf.

In which case yes.

No, I don't see it.