I think Gambit would work on Excalibur if the writer bothered to know the character at all. The Guild he grew up in was steeped in magical prophecy. His Tante Mattie is a voodoo priestess. He's pals with Doctor Voodoo. He STOLE THE EXCALIBUR from EXCALIBUR herself. And I don't know if it burned up with his New Sun powers, but he did have some lore crammed into his head by Sinister stolen from Ozymandius. He was even casting magic spells in the first issue of All New X-Factor.
Rogue maybe has some kind of magical connection through that weird hippie commune she grew up in (weak). But her role is to be BFFs with Betsy. You know, because they're so close.
Trying to make sense of Excalibur the book is not really worthwhile. Let's hope it's canned after July.
Gambit is chained up on the July issue. OH NO! How will he escape without Rogue there to help him? (the sarcasm is fierce with me today). Likely, he will be unconscious the whole time. I'm gonna guess some kinda spell that prevents a master thief (who finds himself bound in chains about every Tuesday) from escaping, but it's all the more likely he knocks himself out.
I'd like it if Gambit, who has completely isolated himself from friends and family in his single-minded commitment to Rogue, got bored of his house husband duties and took a walk around the island looking for some of his long-lost friends. And maybe realizes that his precog pals killed during his last stint as a Marauder aren't around. Then he can go over to X-Factor and they can look into it. They could solve the Mystery of the Missing Clairvoyants.
Or maybe Storm swings by the Lighthouse, says I got a bunch of teens to mentor and you're good at that, so let's jet.
He's not going to Marauders, I think Banshee is. X-Force is too gross and I don't want to see him get chopped up into hamburger. He'd have to do something bad or be out of control to end up with the Hellions. Likewise, while I am endlessly amused by Sinister, I don't want Gambit being used as canon fodder, eaten by zombies, chopped up by deformed mutants, or have his teeth pulled out. Given its horror themes, Hellions would probably kill his cats and there will be a whole Pet Semetery arc.