Disagree. Entirely disagree.
The four best teams in the country should play for the championship. Some years, they'll come from 4 different conferences, and all be conference champions.
Many years, they will not.
Let the four best play.
i've gone back and forth on this, and while i still believe winning the conf should mean something to your post season goals, ie winning a national title....a 4 team playoff doesn't necessarily make that necessarily true...
if winning your conf was an "automatic qualifier", then you'd have to have more than 4 teams, period.
cause under the current system, and it could happen this year in the big 10, the "best" team may not even play in the conf title game.
if you break it down to who's really the 4 best teams, and we have say TN/FL win the SEC, VT win the ACC, and PSU win the Big 10, should they all get in to a 4 team playoff over Clemson, Bama, and OSU?
so to your point, no, they shouldn't.
now if we're talking an 8 team playoff, where you could get 5 power 5 conf champs in, and 3 "wild cards" or "at large" teams....then you might have a case.
but even then you'll have years where you'll have a team ranked 20th pull an upset, and that may take 2-3 teams out of the running that were in the top 10 all year long. when that happens, it's a penalty to have a conf title game.
where it helps, like it would have in the 90's....we'd of likely made such a playoff at least twice...95 and 96, definitely made it in 97 and 98, and maybe 99? but in a season like 01, the title game upset would have hurt....
long story short, i've done a 180 on the whole "you have to win your conf to win a national title" mindset. it should matter, but it shouldn't be a requirement.