The cops by me are going from the ST1300 which they seemed to really like, to the new Kawasaki 1400 Concours.
I had a GL1800, for several years, I went through the suspension on it, and they do handle pretty well for a big heavy bike.
MUCH better than a GL1500 bike does.
But my 86' GL1200 4cyl. handles just as good or better than my GL1800 did.
I am sure a much lighter version 1800 like the Valk, with a even lower CG, with a much upgraded suspension, The new Valk has larger cartridge forks on it stock, that is a really good upgrade.
Old GL1800 Goldwing was 0-60 in 4.4 seconds, less weight means more thrust for lift off, better handling, and better braking.
They put Larger Rotors and 4 pot calipers, instead of 3pot, on the New valk., They must know it is much faster than before.
Also more ground clearance for the new Valk from the old GL1800 goldwing, humm sounds like the new Valk is made to handle fasst corners to me.
But i will find out with a test ride
Here is a picture of my 86' GL1200, it used to have front fairing, saddle bags, and a trunk, but now it is naked, it went from 700-Lbs down to 560-Lbs wet.
That weight drop made a Big difference, in handling and how fast the bike is, and how much better the brakes are.