Nothing would Change at all, It's basically a film that can really happen at anytime as long as it's happens prior to No Way Home and after Endgame.

I personally consider Far From Home to be the start of the Multiverse Saga because it is the first film to introduce the concept of the Multiverse even though Mysterio was lying about the exact scenario. I also view the sagas as seasons in a huge TV show and Far From Home feels more like an ep. 1 than a finale while WandaVision doesn't really feel like the start of a saga

Honesty, Wandavision really feels more like a Season Finale then Far From home did IMO, it's ends most characters arcs like Wanda and even Monica and sets them up for the next season.

Far From Home meanwhile feels more like a first episode of S2 (Well more like S4 of the MCU techinally but still).

some time before theater's release, Far From Home was part of Phase 4.

not sure when it moved to Phase 3. and not sure whether or not it was explained.

similar with various movies/shows of this saga; though I do not remember which ones.

@Ra30990 Dude, you basically described how I do it! I also personally consider each Phase like a TV season, each Saga an story arc and as if the MCU were a big television series. I thought it was just a stupid statement of mine but it's cool to discover that others do it too.

Nothing it’s basically the same thing just Far From Home is moved to Phase 4

However if Far From Home was moved to Phase 4 not sure if No Way Home would still have been a part of Phase 4 or moved to Phase 5