My preference would always be for a longer runtime that preserves all the necessary scenes over a shorter runtime. So I’d argue for the inclusion of all of those things.
BoBF, Mando 3, and Ahsoka, can all fit in single movies. But I’d argue that Mando 1 and 2 could each make two great movies, when intercut with BoBF’s contemporary flashbacks. Acbagel did this to great effect in his similar edit.
His first movie was Mando episodes 1,2,6,3, which really works in that order and gives you more Mayfield and helps enhance Mando’s moral compass. His second concluded the first season and intercut with Boba. His third truncated the early Mando S2 content and included most of the Boba overlap, and then his fourth was the final few S2 episodes with plenty of breathing room to keep all those key scenes in.
I think TNR Ep 1 works very well as is, but would be excited to see more of the (not horrible) Boba Flashbacks from the beginning on!
Like I said above already, totally think season 2 actually needs to be split in 2 movies.