Keep in mind I'm not saying it would be easy to change the method in which, architecturally, the slopes are achieved on the Virus hardware itself.
I'm saying they wouldn't need to. Even a mediocre software developer with high school level math could take their existing recursion method, and display it visually and provide a couple of knobs to modify the curve of the lines, so they are out of excuses as to why they have not made Virus Control plugin competitive with other offerings. We are talking here about modification to the software plug-in only, not the Virus. They don't need to go back to hardware manufacturing design, just update their software like every other software publisher does, with a value-added feature set.
Actually, because the Virus itself is only software, they could offer both legacy and "modern times" methods of achieving this, but there could be some issues with regard to physical knobs and such (I doubt anything insurmountable). But yes even on the hardware it should be achievable with a firmware update alone.
I'm not saying the software work would be easy, or should be done with the Virus C, but it could be doable there as well by a third party editor, once again without changing the nature of how the curves are derived.
But the crux of my position is that despite how easy it is to do right, don't hold your breath waiting for Access to do it. They transcended complacency a long time ago and have been riding on all-in-arrogance for many years. The best you can hope for is an announcement in NAMM 2016 of the coveted limited edition PinkStar, a Virus with pink keys for those fans of Lady Gaga or Ke$ha
Another color change, yay. Marvels of innovation.