“As far as I understand your seat hight is your seat height and is a function of how long your legs are…therefore should not change with the seat tube angle”
I read once that there is actually a formula for this. I think(but can’t fully remember) that it could be a 2:1 ratio. Shift your seat forward 2 cm and raise it one cm. The M2 Racer Power Module seat shifter that I just purchased has a built in compensation that as the seat is shifted forward the seat is also raised slightly and vice versa. I don’t know what ratio it uses.
Anyone have any insight into this??