Why hasn't R4 been replace with R5 (or equivilent)

I was just wondering why we haven't seen a newer version of R4 in a long time. I know the program was developed many years ago and the community has gotten a lot smaller than it used to be, but I still see clubs all around town (St, Louis MO, Paducah KY, Chicago IL) using R4 and even R2 as the only visualization on multiple flat screen through out the building. Processor and graphic technology has come a long way since this program was originally developed and my current system, along with many others, can run this program at full setting at way over 100fps. A new revision with some new coding for modern, multi-processor computers and high end graphics cards could put a new lease on life for this aging program. As it stand, 3 of my favorite vjs use it regularly in mixing with there video and other visualizer content to create multi-layered showcases of awesomeness. R4 being one of the few visualizers that come with a console command abilities, and a scene brander to create your own show, you can see the continued usefulness. My friend has a $3000 program and hardware combination to VJ and he still uses R4 the most because he can create unique visualizations for specific shows with the parties name, DJs names and live video feeds of the DJ and crowd. There is still a large group of people that would want to own and use this product, and with the expansion of electronic music is the US scene, clubs, rave venues and even live shows could all sport this new product. Just and idea, what do you guys think?