The only time I've had a problem with Superman's height was when he was dwarfed on screen by the majority of the Justice League including Diana. Generally, as long as he's 6ft. or taller, his height doesn't matter to me. But if he's gonna be constantly surrounded by people over 6' don't have him on the lower end, or at least make him taller in camera, which is easy to do. Just like you don't cast a 6'3" Jimmy Olsen to a 6' Superman. But then, Mehcad was miscast in every way imaginable, imo, so that's not a Tyler problem for me. Dean Cain was the same height as Tyler and never seemed too short for the role, imo.
The height I imagine Supes being when I read him is about 6'3."