I deleted the bottom picture because it distresses me.
If we get football in 2020, I think OU's defense treads water.
(BTW, the Sooners decision to move up their PPV game is brilliant from a $ perspective. With less gate receipts, it's the most revenue football will bring in).
Negatives: loss of four best players (Perkins for five games), better offenses in B12
Positives: better talent, better coaching, more system familiarity.
OU's weakest DB, Bookie, should be relegated to the bench. Their S were first year starters last year and should grow simply because of playing time and system familiarity. Maybe more promising is that there are highly touted RS-Fr that could spell/replace them. Motley was best CB, but wasn't spectacular. J Davis was competent early in the year, and there will be several other options who may be better.
Loss of Murray will be felt, but I thought he was overvalued because of big hits. He got beat a lot too. I'm not actually as high on Kelley as others. I think he's quick enough to cover or big enough to take on blocks. I'm intrigued by the safeties who've been spun down (Barnes, Morris). Overall, the young LBs improved last year, and I'm excited to see what another year of competent coaching can provide.
Gallimore + his subs at NT is the most glaring personnel deficiency. Counting on two JUCOs as primary replacements is dicey.
An OU team with a defense in the 40 - 50 range is a playoff contender, and I think that's what we'll see (if we see football).