Ask any fans of teams on the cusp if they would rather play in a meaningless Rose or Sugar bowl this year, or have a chance to win out and play for a championship. As a bama fan, I know which I would pick.
And Alabama is not one of the teams I am talking about. In the coming 12 team playoff, I can write down 20 teams and 12 of those will be in the playoffs, every year. The playoffs will just be a remix, every year, of the 12 out of 20 teams, with a once in a lifetime exception. For them, the regular season is really meaningless, because making the playoffs is all that matters, and they always will.
But the rest of the division? And not just the "group of 5" but literally everyone else? There are plenty of "power 5" schools who will NEVER make the playoffs. And they are fine with that. 9-3 and being Gator Bowl champions is about all some place like Purdue, or Kentucky, or NC State, or Washington State, or Kansas State, EVER will do.
With the bowls gone, and yes, expanded playoffs will kill the bowls, congratulations, you went 9-3. Your reward? Nothing.