What part of the current UI screams VR to you?It could be that some of the current UI issues stem from the fact that they already tried to make the UI VR ready. Some of what is currently bad might work fine in VR.
Small chance, and I'm only guessing.
Console/handheld editions might have been at fault since those were developed together with the PC version by Firaxis. VR version got its own developer and looks like they got to start later since it didn't launch together.