You have so many combinations that you like, have you considered a Fractal or Kemper Profiler? I keep seeing these more and more at live shows. 200 amps in one.

I would keep your combo and get a profiler for sonic experiements.

https://www.fractalaudio.com/iii/

https://www.kemper-amps.com/

Here are 2 videos where experts could not tell the difference between a Kemper and a tube amp.

https://www.youtube.com/watch?v=INJ_H5PiuTE

https://www.youtube.com/watch?v=ArYxQGBemfA

If you do go the traditional route, Radial has a unit that can switch between multiple heads going into a single cabinet. For some reason I cannot remember which one it was on their website.

http://www.radialeng.com/