I think, practically speaking, there are so many halachos to learn l’inyan Pesach and you want to continue your regular learning so unless you’re a Rav or in Yeshiva; WHO has the time to also darshan halachos of pesach, especially before Pesach? Asking l’maise shailos, of course, is part of learning hilchos Pesach.
Your lomdeshe piece, however, would make for a great Shabbos Hagadol drasha.