That’s pretty much exactly what they are doing. What we don’t know is if this version is from an alternate future or the same one. We also don’t know how long he’ll stick around. Whether they’ll bring the original back, or just age this version up some. I cannot imagine he’s going to stay a kid for all that long. It’s super lame and didn’t last long for Lobo or Tony Stark when they tried it, so I do not see the fans embracing it here either. Being a grizzled old soldier is just core to Cable’s persona.