I think major complains comes on HO because it is tactically boring when you see it happen all the time, when you expect to get a fight instead of some dweeby acm after head on..
At least I feel frustrated if 9 out of 10 does HO and then either does some very stupid moves or runs, when they could have done alot better.
Most frustrating is those who dives their altitude on you with HO, when you more likely would see for a change them to try sneak in your back. (not to talk about their hit possibility on such dive HO when lower guy is for evading!)
Thats my point on head on, its just boring when theres not real fighting.