I'm surprised that no one has mentioned that Poison Heal+Defog Gliscor is now legal! Yes!
This makes Gliscor even more viable than before. He was already good with good Defense as well as access to BOTH reliable recovery and Poison Heal. The one problem, however, was that HA and Defog weren't legal, as Defog was a tutor in Gen IV and Hidden Abilities were introduced in Gen V. With Legalmons, it makes 'Scor a lot more viable.
Not sure how it would fit in the Legalmons metagame, so I would be very interested to see how he fits.