If that is the case then:
Make fewer changes, - Agreed.
Don't purchase all of them from overseas - Agreed.
Introduce the new players more gradually - Agreed.
Don't ostracise your best centre forward (at least not until your shiny new one from Spain has settled in and proven himself) - if Ade is disrespecting his authority, he is within his rights to cast him away. Plus he was awful last year, let's not pretend everyone was clamoring for him to play.
Don't loan out your best left back (or at least your least sh!t one) - Didn't seem like he was the most supportive of AVB once he had gone, I would suggest like Ade he wasn't the most suited to a 'team first' philosophy and to cutting down his individual tendencies to play in a more structured way.
Don't sell a young, promising, physical, English centre half who knows what the premiership is all about to replace him with an inexperienced, young, ball playing Romanian - especially when you know that one of your senior centre halves has a terrible injury record and another of your first choice centre halves will have to move to left back if the only left back at the club gets injured. - I don't think this has been a problem at all.
The only player that AVB had to lose from last season was Bale. Lamela was signed as a right sided forward who liked to cut inside on his left foot (rather like the way Bale was playing last season). Therefore why not play last season's team minus Bale but plus Lamela?.... Allows the team to play with the same shape and in exactly the same way while bedding in only one player with the other players gradually introduced via the Europa League, Carling Cup and substitute appearances. - That's what he was doing. Siggy played on the left, Townsend on the right, Holtby had his run in the no10 position with everyone moaning that he dropped Eriksen, he gave Defoe his shot against West Ham and he blew it.
My thoughts on the whole Sherwood/AVB affair were that AVB got the sack because under his stewardship we were gradually getting more and more predictable with deteriorating results, along with the standard of the football becoming more and more tedious. I remember in one game saying to the ST holder next to me "I don't think I can remember us being this boring since Santini was here". Sherwood then came in and improved things a little, but ultimately hasn't improved things enough to end up being anything more than what he was always intended to be - a stop gap until the end of the season when an interesting manager merry go round is likely after the World Cup is complete.