That's actually a really good idea. You could run it as a sort of augmented reality program that lets the pilot see "through" the hull and wings, as well as a toggleable view of the rear of his ship. That system alone would probably vastly improve the survival rate of Imperial pilots, even if you did nothing else to the fighter.
As for the rest of the proposed upgrades in the chapter, I'm honestly not sure they're needed. Finding a way to slap shields on them is a good idea, but there's really no need for hyperdrives or more extensive life support systems. Imperial fighter doctrine isn't changing anytime soon, and they already have specialist TIE variants that are shielded and hyperspace capable, so it's not actually a niche that needs filled. The reason the Rebels used them is because they were a guerilla force for whom mobility was absolutely key. The Imperial Navy doesn't use its fighters that way, which means that a hyperdrive would just be an expensive paperweight in most TIEs.
And lastly, Las himself has no need for fighters with those capabilities. His entire "realm" is a single star system, and he has already been investing in a fleet that can project force across that system at will, and which is more than capable of carrying TIEs along for the ride. Just stick shields on them. It will be much,
much cheaper, less politically problematic, and would actually suit his military needs. And building a facility to construct or retrofit standard TIEs with shields would be much easier and cheaper to accomplish than setting up an entirely new construction line. He could even lobby for support with certain members of the Imperial military establishment that support improved fighter designs, like Thrawn,
Demetrius Zaarin or
Shea Hublin to cut through the red tape and help with the setup.