I’ve got an overwater custom jazz. Didn’t have any specifics in mind other than; fretless, ebony board, and looking a bit like the bass of doom in its current state. I absolutely love it and the neck is probably the best I’ve played.
Otherwise a neck thru 5 string would be nice with a figured walnut top and back, flame maple centre and sides, 34” scale, 18mm string spacing, brass hardware, and Ken Smith pickups and EQ. Fortunately I can get that off the shelf if I win the lottery.