I disagree,
FULL AD SORAKA is still good
as well as
FULL AP soraka
support soraka only seems like the only one that works is because you (and others) trap yourself in failure, don't trap yourself in meta it won't make meta-breaking work.
Old Sion was fun yes, but he was... disjointed? he didn't fit in meta his model was clunky and there was no... decent? typical? reasonable?
with sion
you had a kit that had 1 ability that is the greatest tank ability ever, a way to get more health per CS and a decent cool-down shield,
but with your ultimate you had the greatest bruiser ability ever, you gave your team more damage and LS based on your damage
and then with your stun and shield you had a great AP scaling possibility
basically sion had no identity he was ok at pretty much everything but good for nothing, while fun to play had no actual identity beyond being the "slow clunky guy who has the crap particles."
I can't claim i know everything about sion, i'm still barely a first-year leaguer but i will stand by my point in that Sion is actually as Good tank as to good for nothing.