The team never really evolved significantly personnel wise from League one to the Prem. This is the major reason for relegation as we were essentially chasing three years of underinvestment with two years of Prem money. We had a culture at boardroom level that had allowed sale of all our best youngsters for pitiful money, which only compounded the difficulty of future competitiveness (Ramsdale, Calvert Lewin, Brooks, Adams). With the slight exception of the tactical switch to the flat three in the Prem, we never really evolved tactically. Why would you when you are successful? Injuries exposed the lack of depth, the first three years of underinvestment in the team, and the sale of the young players.
Going forward we need to have a churn of players. If I was in charge I'd be attempting to garner decent sums from the sale of predominantly older saleable assets (Stevens, Baldock, Norwood, Egan, Fleck, Mousset (special case) that may bring in decent fees. Sharp, Didzy and Bash are unlikely to bring in much so it is probably wise to stick with them, and dangle the carrot of an extension if we're successful next season. I'd also move on another LWB and bring Norrington Davies into the fold. I'm hoping we retain the more saleable and thus valuable young players - unless we're offered silly money. Any significant capital raised should go towards future saleable young assets that we can develop. Hopefully this would bring the wage bill down significantly, and give us scope to reshape the team. The out of contract players can all go for me.
I don't see our unique system outlasting the Wilder era, due both to the specific personnel needed to implement it, and the ongoing lack of strength in depth in these areas. Recruitment and retention should have in mind the future head coaches tactical preferences.