Crossfade "Adjust Bouds" as default option
 

I am just wondering why this option is still not selectable in preferences.
Often when editing dialogs I just need to have a basic crossfade between two regions (clips, sorry). If one of the region was processed with AS plugin like RX2 Spectral repair (which doesn't allow to have handles due un-proper operation) then I get this message: Skip invalid fade or Adjust Bounds.
Would be great to be able to control it automatically by checking / un-checking this option in preferences.

Also anyone noticed that in MacPro and PT HD10, all messages (with blue button) offering "OK" or "Adjust Bounds" or "Delete" e.t.c do not react to space bar. Only "Enter" affects them.
I jumped from PT HD 7.4 where space bar pressing was a time saver in this case.
Anyone knows if it's possible to make it work again?