TIE Strikers are atmospheric fighters, which might be neat for the ground battle. However, I don’t see when in the battle they could fit. The shield had to be lowered for Tydirium to land, so I’ve always imagined that there’s a shield over at least part of the surface too. Like the cone that goes up and around the DS2 is still a few miles wide on the surface to protect the shield generator from bombing runs. So any kind of aerial battle would have to happen after the shield goes down, which doesn’t leave much opportunity for air strikes.
As for those mourning the PTR, I firmly believe that Adywan was not your last hope. There are plenty of talented people on this forum and others who have been reworking the prequels for years.