We're not that far apart in reality. 100% the squad need serious pruning down to an overall size of 22/23 or thereabouts, with an emphasis on quality over quantity. Although we haven't heard officially yet, the likes of Callachan, Paton, Blaney, Zadrowski and maybe Seddon will be off most likely before the new man comes in, as contracts expire on 30 June I believe. Return of loanees to parent clubs will account for a fair proportion of the cull. Like it or not, we won't cut loose injured players like Robinson and Nicholson just yet although I agree long term. That then leaves O'Donnell and Halliday from your hit list. We do need some continuity and experience going forward, but the former's deal was signed quite some time ago. The new man will want to assess his squad first and will have time to do that before the window closes. It might well be that he wants to move on 1 or 2 players fairly quickly.
One aspect I'm uncertain about though is progression young players. In theory I'm 100% behind this but they have to be good enough to make the step up and I simply don't know the youth squad well enough to form any opinion.