If I had my way there would be only FAS models but too many people demand reproductions of existing amps.
I've always enthused about many of the FAS models over the decade that I've used Fractal devices. The "FAS-Crunch" was a mainstay for a long while in my AFX II.
While there will always be a large contingent of people who want reproductions of current amps, I've always felt that developing new amps in the digital realm is far more exciting and suspect there are many who would welcome that too, especially since we could all have it both ways.
Given all of the knowledge of tube amps, their warts, limitations, similarities, etc. you've accumulated over the years refining and creating "The Next Generation" of amps would be an amazing and fresh way to further put that knowledge to use.
I know I'd be all over them. I find it very interesting when you 'distill' the various aspects of tone creation, component/circuit interactions, etc. into new models that go beyond what current tube amp tech can offer, especially when you can remove the many unpleasant artifacts (bias excursion, etc.) and limitations (filters that could only be created digitally and never by analog circuitry, etc.).
Even pushing for a entire new paradigm would be cool; where you didn't model conventional stages, components, filters, etc. but distilling and abstracting the various elements of tone, dynamics, interactions, circuits, bloom, all of that into a new 'black box' with new types of controls that simplify and add new methods of versatility and the dialing in of tones while retaining all that we love about the strange ways tube amps 'do their thing'.
Who knows...in the years to come FAS original amps may be the new standard of guitar amplification...!