I am on an R&D team in industry with no formal connection to anyone in academia. However, a professor wrote a paper on implementing idea A. I have an idea B that extends idea A, but I am unsure about some practical implementation details. I strongly suspect that the aforementioned professor would have some intuition about implementing idea B as they did a very good job of implementing idea A. Moreover, the paper containing idea A did not get very much attention (i.e. has a low citation count and no follow up that I can see). It seems to me that if I am right about idea B, then they might enjoy having found this new application area.
I have written up an explainer on this idea which has the rough form of an academic paper -- though in its current form it would not be publishable. I would like to email this professor, give a brief explanation, attach the explainer, and ask -- if they have the time to spare -- that they look it over and comment if it catches their interest. Is this an acceptable thing to do? If not, are there alternatives and, if so, are there faux pas that I should specifically avoid?