Hi @chimaeraThe seat is as low as it can go and I'm the recommended "3 fingers from the roof" high. I'm not overly tall (180-something) but long torso and neck means I'm always sitting tall.
Not sure about the spec, it's a manual seat, has side airbag, no heating, no leather.
Swapping out the seat is a bit of an extreme measure (as I'm not a mechanic), especially in the current state of things, so the chances of getting that done now are pretty low.
@mrgfI don't think there is enough of the poles to extend easily, even if I did it won't help much as they the headrest is protruding too forward for my liking anyway. Ideally I'd like to get a compatable headrest with a "flatter" angle. The bellow pictures should help explain, red is the standard angle of the poles where blue would suit me much more. I've seen such in pics of some VW's but haven't been able to find if they are compatible or not.