Not really. The Super X wasn't anything too special to begin with and was one of the less interesting super-vehicles in the series. If they're going to do it I'd rather them create something new.
I liked the Super Xs, but if they are going to reintroduce classic vehicles I'd rather see something like the Gotengo or Garuda.
"When man falls into conflict with nature, monsters are born." - Professor Hayashida, The Return of Godzilla
Or the SY-3.
I really like the super X's, 1-2 are like flyng fortresses, wihle 3 loks like a cool airplane, but Masser Cannons, Gotengo and the Moonligth sy3 are more realistic