Just putting these in one place so they're easier for me to find.
Source: http://shoryuken.com/2015/09/18/battle-planner-pachi-explains-how-fan-vote-characters-might-change-in-guilty-gear-xrd-revelator/
Note: Guilty Gear Overture is a Herzog Zwei-esque Action RTS so characters from that game are bound to play differently when ported to a 2D fighter. That said, I'm still sad that they didn't take advantage of this opportunity to add some zoners.
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Dizzy (GG Accent Core +R)
"With her usual style I think her set-play and [Xrd's Yellow] Roman Cancels would
synergize well, but I’d like to give her a style where she appears in
your face rather than retreats away"
Raven (GG Overture)
"In Guilty Gear 2 Raven had a style to fluster the opponent by attacking
the opponent from long range with projectiles, slowing them, and
attacking them from behind. I think in GGXrd with the addition of some
updates he would be able to do so at mid range."
Valentine (GG Overture)
"Valentine was originally a projectile-based, long-range character, but
since some of her moves like Zest and Calvados have been taken by other
Valentines (laughs), if she appears we might want to give her a
different fighting style."
Justice (GG Accent Core +R)
"In Guilty Gear Accent Core Plus R, she seemed like a fortress with her
usage of projectiles, but if we add her to GGXrd I’ll like to give her a
fighting style with a bit more mobility. That said, she wouldn’t have
free mobility, but I’d to make her capable of creating mix-ups using [her fireballs] and herself."
Dr. Paradigm (GG Overture)
"In Guilty Gear 2, Dr. Paradigm was a character that used his minions to
allow him to run about, but I think it would be interesting if he could
keep the minions but fight in a more conventional style. I think it
would be neat if Roller was a rush move, Bower was an anti-air move and
Bone Biter was a move that allowed him to do decoy attacks."
Anji (GG Accent Core +R, not exactly a zoner but had long reach and used his projectile in neutral)
"I want to change his style while keeping the interesting parts of his
guard point moves like Kou. It seems like he would be good with a style
centering around close-quarters fighting using his guard points to
approach."
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As for the other characters, Testament would be made "a little easier to understand" and Bridget would only keep his mobility "to a certain degree" but nothing was explicitly said about them losing their respective zoning and runaway playstyles. Zappa's three summons might be redesigned/updated, but nothing was mentioned about how they would play either.
Izuna, who was an all-round character in GG Overture, "would be a character with short range but able to fight with a
hit-and-run style with his dashes. He would want to place a Daruma doll
on the opponent’s wake-up to apply pressure."
With the possible exception of Fanny from Guilty Gear Petit who would
"undergo a full model change and become a different character
practically", all six of the characters in the article who had a rushdown playstyle in previous games would stay as rushdown in Xrd.
