The secondary is pretty much inherited from HCSS, and was recruited to implement his more aggressive defensive schemes. Most have at least a year in HCSS's system. Shifting from an aggressive blitzing scheme to the Tampa 2, I suspect, will take quite a bit of time for these kids; it's a paradigm shift in thinking and execution. Baber's DB recruits won't have to "unlearn and relearn"; they'll be immersed in the Tampa 2 from the beginning. It will, though, take a good year working the Tampa 2 before they're up to speed.
As far as the DL is concerned, I think the pressure they're bringing is just fine. Slayton, Samuels, and Steven performed as well as Alabama's front did yesterday when they played WKU. Not one of Bama's DL (including Payne) got to the WKU in under 4-5 seconds (I know because I timed it). What needs to happen is the secondary must give the DL a bit of time for them to get through an opposing OL. To restate, pressuring the QB is more than a "4 man rush"; pressure also takes a secondary providing enough time for that pass rush to develop. If the fan base is wanting to see guys in the backfield in less than 4 seconds, we're going to have to blitz CBs and LBs on a fairly regular basis.