Gambit in the Savage Land would just be a thirst trap for women.
And the problem would be...? (I'm jk.)
If I was gonna write a Gambit solo it'd be to expand his status, but, outside of the X-men and his New Orlean ties. I'd have it start off with him doing high stakes heists in Europe, stealing from the Louvre or the Vatican or something before being recruited for a "do good sin" mission to steal from Doctor Doom in Latveria. And of course, he'd kick Rogue in the cooter if she showed up to lecture him, charge up her jacket and kick her over a cliff. Boom. He gets back to the states, successful, is betrayed by whomever recruited him, and worse, Doom has stolen his cats as an "invitation" for him to return, so Doom can extract revenge.
I don't mind random stories from the past as long as they are chapters that fill in Gambit's history. Claremont's mini didn't serve any purpose, and there was yet another disposable Bond girl type who we've never heard of again. I'd love to have a new solo set in the present with ties to Gambit's past.
Claremont's mini feel another solo disguised as "and Gambit" (Storm in this case), but I still liked it. You can see here why he loves Storm so much.
Thing is, we really can't walk away much from NO if we want to know about his story. The best way to do this, me thinks, is to give him back is KoT title and that would help the plot for him to move around the world. Put him in whatever country you like with the local guild and participating with them in whatever mission they are for to solidify his status as their leader, later making them work for them.
I wouldn't want him to steal from the Vatican, but rather to recover something
from for them. Put him in NY with DD starting as an antagonist and then working together would be fine (Yes, it happened before, can happen again). Then make them both fly to Rome, that can be fun.