Haha you've got a point here, but when I said 'five core tones" I meant "five core tones from different amps". Let's say a fender, a vox, two marshalls and a boogie Pretty much what Kemper claims of being able to do, in a small 5kg box.
Hmm... and then You say You don't want to use a FRFR but an guitar cab? What cab would give You all these tones?
You will not get a Fender or a Vox sound from a 4x12 Marshall cab or a Mesa Rectifier sound from an open back Alnico 1x12...
If You want that flexibility, and I do, the FRFR path is the way to go... it might not kick Your a$$ the same way as that Marshal, but I think if You put 4 Yamaha DXR12 together it would probably do it quite well.