I’d love a CE-24 with a middle single could pickup, and a super switch. I’d also dig a Piezo option, but I’m probably in the minority.
Track down an old Swamp Ash Special. Bolt-on, H-S-H (with the best, smooth neck pup outside of the 53/10), and maple or rosewood fretboards!
It's amazing how many of the wishes in this thread have existed, but didn't sell well enough to stick around. I agree with so many of them, especially a Santana-shaped Special. The Mira 25th Anni had soapbars. I loved my Mira, but both soapy versions I played were dull.
Maple SS now exist! Maybe that lefty is just around the corner!
For jazz(-ish), track down an old 90s spruce topped Archtop, or a more recent SC HB II and swap the pups.
And, yes, unless the guitar is black (and even then make it an option), get rid of black backs!
And bring back winged tuners!