Re not seeing the top of the dials, yes I can see if I lower the seat but prefer the sit up as high as possible. I'm 5'10" and have the seat at its highest position. I personally don't like feeling like I'm sitting on the floor.
Each to their own.
I'm comfortable with this and the HUD means I can see the relevant infor anyway, I spend most time looking at that rather than the instrument cluster anyway.