I was at the Flames game tonight, and at the end of it I heard something new: the PA announcer mentioned some upcoming NHL games, including all the games on Hockey Night in Canada - NONE of which involved the Flames. Basically he was saying, "btw, these games are on TV at these times, so watch them."
Could the CFL do something similar? The impression I get is that most football fans like their local team, go to the games, cheer for them, and may even know whereabouts in the standings they are or how well they're doing, but they don't follow the rest of the CFL. Also, every Canadian sports fan knows that Saturday night is HNIC, and that Monday night is Monday Night Football - but Friday Night Football seems to have much less "prestige"; less of that "oh, it's Friday night, that means there's a football game on! I'll watch it".
Perhaps if the CFL mentioned all other games for the weekend after each game - not like there's many to announce - it would get fans more interested in the rest of the league, and create more loyal fans.
Another thing the Flames do is show the complete NHL standings during intermissions. CFL teams could do this, too. Perhaps they could even show league-wide highlights from the past week of games.
All these sorts of things would increase awareness of the CFL, which would get people talking about it even more, which can only be a good thing.