U Sport Head Coaches like Faulds, Dobie (recently retired), Wayne Harris Jr in Calgary (now also retired) & Blake Nill at UBC all have./had lecturing positions & are probably tenured. They're being paid to teach & coach. And they have benefits to go with it. As a CFL assistant, they never used to have any benefits health or retirement so to give all that up to be a lowly position coach in the CFL isn't much of an incentive.
To make it more attractive, assistant coaches in the CFL need to make a lot more money as well as receive health & retirement benefits. Coaches in U Sports are under a lot less pressure than they would be as members of a CFL coaching staff.
Nik Lewis is a great example. He broke into coaching with the Riders & then was let go when the coaching cap came in. On social media, he was practically begging for a job in the CFL somewhere. He finally got hired by the Stamps, his old team. Coached one or two seasons, I believe. Then left saying he had a business opportunity in Texas so he quit.
Juwan Simpson was coaching linebackers with the Stamps & he suddenly quit to be a position coach with an obscure Junior College team in the eastern US somewhere. Until we actually pay these guys decent money, we won't attract or reatain quality coaches.
It's just a life of low pay, long hours & obscurity until a coach become a coordinators. Then comes better money but more pressure. Even longer hours... My son had a chance for that life to coach college in the US & really wanted to do it when he was single. Then he met his wife. They bought a house in Seattle & he decided that family came first so he abandoned his plans to coach. He didn't want his future hinging upon a winning season or if his HC was fired or not.