I haven't done TKD in 15 years or so, I did ATA, WTF, and the sister art TSD. WTF and TSD used headgear, ATA was wear whatever you feel like (one of the black belts at that school had to have facial reconstructive surgery from a roundhouse.) None of the headgear had face protection so it was pretty irrelevant against straight kicks though.
I moved on to MT and boxing, and I do frequently use front kicks in sparring, and yes I feel my leg dexterity is light years ahead of my MT guys. The first time I sparred the instructor on my first night of MT I caught him with a front kick to the face and he laughed at himself.
MT we don't use headgear except for heavy sparring, boxing we use it nearly always.