It's been almost TWENTY years since the name Ottawa Rough Riders existed, no one under 30 would remember them. Time to move on and market the team to a younger crowd.
I used to mention this when the name debate was still relevant, but...the Ottawa Rough Riders didn't just get erased from history when they ceased to exist. Look at how often the helmet popped up in pictures and announcements in regards to this team until they got a name of their own.
So you're right, no one under 30 will REMEMBER them, but most who care in the slightest will know about them.