And what is the cost to benefit ratio for doing it? Just because it is possible to do it doesn't mean it makes sense to do it, from a purely business point of view.
RFS works great with Grafit. We updated all our units. There is a kit which contains everything needed at a fairly reasonable price. The benefit is you can remotely control every function of each of your packs by computer if you add the usb transmitter as well, you can additionally divide them into groups and trigger them individually. This may not be important to everyone but if you place a unit on a ceiling rail system, or you are on location and have one pack placed on the opposite side of the building in another floor...Of course YMMV.
Downside is the RFS transmitter (which also let you control the master dial for all units in that group btw) is fairly expensive and is not ultra high speed. I also don´t know if this kit is available in RFS2 version for Grafit packs.
broncolor Grafits are not the newest equipment but they still are one of the best packs money can buy and they seem to last forever.