As to the question of what the pad was going to be used for, and FD initially and repeatedly answering that it would be used in future, it seems to have been ditched as shown in the latest video from DB, so I reckon we'll never know if it wasn't intended for the SRV/landing interface.
However, I'd assume from the holographic projection in the video that there was too much information to try and fit it all on the pad's area, and probably made harder to read in VR which might affect their ability to claim a well designed implementation of support with Vive/Oculus over the next season.