The hoppie network has been in use for close to two decades now by a very small amount of controllers and pilots, but even so, it's become much more popular in the last few years. Euroscope has plugins for automatically sending and receiving CPDLC messages inside the radar client, so you do not have to use the horrible controller client.
Unfortunately, since most of us use VRC/vSTARS/vERAM do not support plugins, so unless Ross decides he wants to refresh both VRC and vERAM (possibly vSTARS, but then again, CPDLC is not used in terminal environments...) I don't see that support happening anytime soon.