Dont think you can read too much into the last few results given we had bottled Europa already and he was trying out different players in different positions likely with a view to next season. He will know a lot more about his players now and for me, fundamentally the likes of sigurdsson, walcott, coleman, davies have proven beyond doubt they are not good enough to start in a 442, or any Everton side at present in my opinion.
Our strongest position is up front with richarlison and dcl so Ancelotti likely knows his best bet next year is to stick with a 442 (beyond replacing 90%of the squad). Gordon did well in those final games but thats pretty much it. We need a whole new right side to the team, at least one central midfielder who can compliment Gomes, a centre back with pace. Thats 4 players that need to be starting quality for us to start to look consitently half decent. Then you can probably add a left sided player to that. Lot of work to do.