To each their own @stanton. I disagree with everything you said but I can see where you’re coming from 
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I don’t hold Corbucci in as high of a regard as a director as you do either. He’s very creative and comes up with very unique and inventive ideas but he is not the best at implementing those ideas, he was never as good at directing as Leone, Valerii or even Tessari (he is better overall than sollima tho). He never got pacing quite right outside of The Great Silence, and i think good pacing is important. Django and The Mercenary being the worst offenders, Companeros not being great in this regard either (but also not bad either). His films also tend to be somewhat uneven, with TGS and NJ being the exceptions. Furthermore, the cinematography can be unremarkable in some of his films too.