We're relatively new to a very small OOT community. There was no shabbos shuva drasha. The concept of the shabbos shuva/gadol drasha strikes me as a little antiquated in this age when rabbis have shiurim, podcasts, etc. all the time. However, I always thought the shabbos shuva and gadol drashas are a pretty universal tradition. Am I wrong? Is it not a Chabad "thing"?