I'm going to challenge this. They were not coached well as a group. I believe the former staff including Pruitt were as good as anyone in teaching "technique". If the current staff can coach their scheme and teach them to make better reads then the fact that they were previously coached and schemed poorly... may not be a negative.
Remains to be seen. Henry T was an obvious loss. The guys who were kicked off the team were unavoidable. But who by name do you think was irreplaceable. - they are all replaceable, it is just that Heupel and Co have not had long to make waves with recruiting and thus it may take a year or two. Heupel and Co have done as good a job as anyone at using the portal this off season and I actually think long term the recruiting will be fine.
I'm going to say that the addition of Mitchell takes a lot of the sting out of losing HT. UT lost their leading tackler from last year who averaged 7.6 tackles per game and add Texas' leading tackler who averaged 6.2 tackles per game. Just the little bit I watched of Texas from last fall, Mitchell looked better and more natural in pass coverage. - I too have watched Mitchell's tape and feel he is better than Crouch at coverage but maybe a little less of a tackler than HT. All said a great pickup for Heupel and Co.
May hurt... but may also help.
I think we are all concerned about that. They need to play a lot of guys even if they have to "protect" some guys to get a few plays out of them each week.
What bothers you about the secondary now? - Nothing expressly bothers me about the secondary. My "issue" is that I feel the DL will not have enough difference makers to get ample pressure on the opposing QB to make the DB's look better(?). It is not a DB issue, there is no way for a DB to cover for 3-4 seconds with the way offenses are setup now. If DL are not getting pressure in 2.5 seconds a decent QB is going pick them apart. This is not just UT defense this is every teams defense.
Well... HT and Crouch were a part of that problem as was Pruitt's scheme. Of course that doesn't mean it will be better... but it could be.