Rabbi Menachem Mendel Schneerson had such an amazing impact on the Jewish religion and culture of the 20th century, and his work continues to have relevance today. I think that including his philosophy in everyday Jewish teachings would only be right. And if not as philosophy, then definitely within a historical context.
Yes, Rabbi Menachem Mendel Schneerson's philosophies should be included in Jewish day to day teachings. He supported both a positive path and a ideology that would help lead the Jews along a path to religious prosperity and unity. Just with all people, events, or time periods in history, they all have a positive twist that can help teach a lesson of the things to do and not do for both present and future.
Yes, I do think that he should be included into everyday Jewish teachings, because he was a major figure in the history of Jews, and made a large impact on their religion even how it is today. He was one of the most famous rabbis to ever come through them.
Judaism has been around for thousands of years and Jewish people as a group are already more progressive and forward thinking and secular than many other of the world's religions. With the exception of the Israeli government, Judaism is largely benign and friendly and accepting. Don't fix what isn't broken.
As far as hard core religious sects go, Schneerson's sect that he found are among the best there could be. His followers go out of their way in life to be as nice and welcoming as they can be and treat everyone with respect, but, in the end they're still too fundamental.