I'm doing all of this on my iPhone so the analysis isn't real in depth.
Making the playoff and winning the playoff are two totally different hurdles. Getting there takes the right blend of talent and schedule but winning it by playing two elite teams in less than two weeks takes talent and depth. I could see a Cincy, Boise or even Baylor making it some day but could they beat Alabama then Ohio St? I highly doubt it. But this question was just about making it. My thoughts...
At one point late in the season last year Marshall was undefeated and ranked behind a two loss Boise State. That shows the committee's view on CUSA vs MWC. The gap is even bigger between MWC and P12/SEC/Big Ten. I feel safe in saying no group of 5 will make it. BYU has a difficult enough schedule to make it but no way do they beat Boise, UCLA, Neb, UCF, Mich, Cinci, Missouri.
ACC - Clemson only has two starters back on D I believe. FSU is the only team out of the ACC that has a realistic chance. GT was a nice story last year but will drop a few. I'll add ND in here since they are quasi-ACC. They return 20 starters but have a more difficult schedule then it appears. 2+ losses knocks ND out.
Big Ten - MSU getting Oregon could be a huge boost for their resume. Not sure if an 11-1 MSU who didn't win the conference and only lost to OSU, could get in.
Big XII - Baylor and TCU will be good but will no doubt drop a game or two at some point. People get enamored with the scoreboard and forget about these teams flaws. Baylor had more penalty yards than offensive yards (350+) against WVU and lost. TCU almost lost to a poor Kansas team. OKL and OSU will be decent and I'm sure everyone finishes with 2 losses.
SEC - The top teams all have massive turnover but are filling those new spots with 4/5 star guys. I'm sure the conference will cannabilize itself with 8-9 teams that will enter the top 25 at some point. I see the champ having 2 losses.
P12 - Oregon takes a big step back and USC/ASU/Stan take a step forward. Again a 2 loss champ is very likely.
If all these conference races unfold as I have mentioned then we probably get Ohio St, SEC and P12 champ and then a toss up between Mich St and Big XII.
Playoff contenders : Ohio St, Mich St, FSU, Bama, Aub, Ark, LSU, Baylor, TCU, Oregon, USC, Stanford.
I just can't see the four playoff teams coming from outside of this field of 12. Boring answer but those are my 2 cents.
Great post but there is zero chance big10 gets two and Big12 gets zero after last year's snub. B12 getting in is almost a given