With the occulus rift coming out 28 March 2016 and HTC Vive scheduled for around April, I thought I'd ask what sort of support was planned for VR. Definitely don't worry too much about it atm, but it's probably a good idea to at least familiarise yourselves with the APIs so you can more easily add VR support in the future (besides Valve is probably still offering free VR development kits for established game developers like yourselves).
According to Norm over at tested.com "third-person camera is still something developers need to figure out." [http://www.tested.com/tech/545672-my-10-vr-takeaways-oculus-connect-2/] That definitely makes this a low priority atm, but a little thought and planning now could save a lot of effort later, and I strongly suspect within 3-5 years VR will be a necessity for games (i.e. once costs come down enough).
Regardless, have you thought about enabling a first person view too? Since the assets are now full 3D, that could be a nice feature for between fights - being able to build a landscape with the editor and then explore it 1st person would be awesome and much more immersive, even without VR goggles.