For me any future C&V wheel rebuilds ideally would allow the most modern of tire choices, preferably be 700c rims with as wide of internal width as possible and also be tubeless ready. Whether you are "classic and vintage" or not I would think you could spec some complementary, modern box section but tubeless ready rims to mate up with you Suzue hubs. I have a second Puch Marco Polo frameset that I need to build up with C&V components. It really wants 27" rims for proper brake pad tolerances but I may do a mock up with 700c rims and then test fit some nutted Tektro long reach calipers when fitted with 700c wheels. If the long reach calipers are able to brake decently and handle wider tubeless tires in the 32mm (or wider) sizes, I think many forgotten older road frames could be repurposed as retro mod gravel rigs.