I think you're trolling, but I'll bite.
with the muay thai example, it's because they are training for the ring. you can do takedowns in muay thai, but only of a certain variety. you can't sweep or do any throw that involves loading the person onto your body, i.e. a hip toss. Consequently, your "innovation" is something that will get you DQed in the ring. Even still, I can't see a coach getting p1ssed about that unless you are doing it repeatedly.
as far as kicking variation goes, there is a kenpo guy in our class who uses the seapu (what we called it in jun fan - I have no idea what it's called in kenpo). he's great with it, and we like him doing it - it gives us something extra to work against, even though it travels the same path as a teep, so we don't have to do anything special to defend it.
what is the "standard thai kick"? thai boxing has two classifications of kicks - thrusting and arcing. several kicks fall into it - back kicks, round kicks, front kicks, spinning heel kicks...many people who don't train thai boxing think that the teep, roundhouse and back kick are all there are, because that's all they really see.
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