The restricted leg room seats in B1 (back row of lower section) aren't too bad and I'm 6'2".
I just have to stand up every so often.
Restricted view are usually just a pole to the side or front of you. It depends what row you are on
Are the advertising boards any higher than prem games, that's the supposed reason for some front rows being blocked off.. they don't look any higher from other parts of the ground