I know there are several SYW gamers use the site. I am uncertain of what rules they use as I myself have never collected SYW figures. I did play several games with David Shuttleworth(Jutland on the Forum), Alasdair Jamison and Steve Ayers in this period. I think they used Keonig Krieg. I have also played Age of Reason but thought the single rank units looked a bit funny.
Perhaps if you sent JUTLAND an e mail or PM he might tell you.
I think ULB could be used but several amendments would be necessary. Some things that come to mind as possibles are:
Class ALL Prussian troops as Veteran or better.
Ensure Prussian generals are classed as Average or better always.
Ensure that Prussians never have less than 50% movement per turn.
Perhaps consider faster manoeuvre rates/slightly better combat and morale rating for them in the fashion of the switch in cavalry combat advantage between NYW and SSW.
Maybe allow guns to fire as batteries?
I had some very interesting discussions over the weekend with the League of Gentlemen Wargamers about working a core generic set of mechanisms across the whole horse and musket period with `period specific modules' to create the nuance of evolving tactics, weapons, organisation etc.
I have already applied this logic to
Republic to Empire which takes some of the core ideas from ULB and bolts on many Napoleonic specific features.
I have had largely very favourable response to the mechanics and `feel' from the Napoleonic Nuts in the LGW and I take this as a strong endorsement.
The short answer is: I think you can adapt. Wanna try and let us know????
All the best and good gaming
Barry