Hi Steve - you certainly communicate well
I personally wouldn't major in English simply because its is my native language and that alone embeds me adequately in the subject. I would not be embedded in most technical subjects if not for active study. My wife is a translator and for language learners getting as good as a native speaker is considered the peak of professionalism.
I concur however that as a soft skill communication and how you interact with others is as important as technical skills to achieving your goals. I really don't know how you study that kind of thing its self awareness and interacting with others . Its still something I struggle with today. Read widely , I set myself challenging personal work goals (which I tell no one about ) when I have slack to prepare myself for times when deadlines are pressing and I try to do preparatory work as well to head off issues that I don't think mgmt has seen. Regards voluntary work not being ultimately responsible but trying to help improves skills in dealing with difficult situations and gives you practice in tackling difficult tasks that have no clear guidance. Teaching people is one of the best methods for me of learning stuff. They ask questions you can't avoid and the act of teaching reinforces the subject for me. Miles cheaper for me than taking courses I always recommend trying to answer the odd question in forums for same reason.