I'm puzzled whether this is a real problem or not.
Isn't it true that you can, even without VST3, run 16 instances of Kontakt (one for each MIDI channel) inside each instance of VEPro, and then run 8 instances of VEPro?
Therefore even with this 8-sever limitation you can run 16x8 = 128 instances of Kontakt on each PC or MAC.
And then, given that you could run the 64bit server alongside the 32bit server, you could put 64bit Kontakts in the former and 32bit Kontakts in the latter.
And therefore you can actually run 128 x 2 = 256 instances of Kontakt on a single machine, even without VST3.
Isn't that so? Isn't that enough?