Fans have done more than just discuss the subject, they have even pressured the club into introducing standing/singing section trials.
From just last season:
http://www.dailyrecord.co.uk/sport/football/football-news/st-mirren-fans-can-bring-4452270
and before that, way back to 2010:
http://www.stmirren-mad.co.uk/news/tmnw/sing_and_stand_for_saints_560999/index.shtml
The problem is that no one was interested.