Let's also not forget that nearly every Phase 4 project was negatively affected by the pandemic and its ever changing presence and regulations around it. All the way from the first project to release to the most recent one. And by that I don't just mean box office, but also development.
- According to Matt Shakman Wandavision suffered major delays due to the pandemic so that they finished the final episode barely two weeks before it released which had caused them to change how many episodes they would air per week. A lot of VFX for the final episode was unfinished and as such they had to cut out a bunch of scenes, in particular with Monica, Billy & Tommy, Darcy and Señor Scratchy
- For Falcon & The Winter Soldier there was the whole supposed pandemic plot that has supposedly been removed.
- Eric Martin has said a bunch of TVA scenes were cut from Loki due to covid time constraints
- What If? lost the whole Gamora episode that was referenced again in the finale due to pandemic limitations.
- For Spider-Man No Way Home there were a whole bunch of scenes where it seemed like characters weren't actually together. It's not confirmed but I think Rhys Ifans and Thomas Hayden Church not being physically available could've been at least partly due to travel restrictions. Also a bunch of awkward shots to get around having crowds like Flash being composited into a party, Flash walking through an empty CG version of New York, etc.
- A costume designer for Multiverse of Madness has said that the Illuminati scenes were a big hassle due to travel bans making it very uncertain who they could get for the scene. A bunch of the actors filmed their scenes separately. Due to travel bans several actors including Patrick Stewart couldn't come to set so had to film elsewhere (also supported by Elizabeth Olsen saying in interviews that she never met some of the Illuminati cast members). Because they only knew for sure who they had for the Illuminati at the last moment and some filmed in a different place, they couldn't properly design and fit all the costumes and as such had to do a bunch of additional CGI (I suspect a lot on Black Bolt and Reed since their costumes looked pretty CG).
- Bisha K. Ali has said that a lot is missing from Ms. Marvel as a consequence of limited time and situational changes due to covid and that she wishes they could've been able to show more of what they had. Most importantly the character development of the Clandestine characters and more stuff about the Noor dimension and Red Daggers.
- We know there were issues after Letitia Wright got injured and had to go to the hospital in the UK with travel restrictions and vaccine mandates that might affect the film.
And there's probably a whole bunch of issues we haven't heard about.
