Not sure if there has ever been a thread on this before so I'll let her rip anyways.
Many possibilities for sure and I understand that many of us were not around in the 40s,50s,60s and even 70s. Just pick the team that you feel was the best of all time. I started following the CFL around the early seventies so I can't speak for earlier teams even though I've heard that Hamilton and Winnipeg had some outstanding teams in the late fifties and early sixies.
Some top ones in my opinion;
to name a few.
There have also been some excellent teams who never made it to the Cup.
My #1 would be the 16 and 2, 1989 Edmonton Eskimos. This Tracy Hamm led team was loaded with talent from top to bottom but their old rival from Regina spoiled their 89 Parade in the West Division Final. Not many people saw that upset coming!!