I would love to see a Freecam mode added to the game in Custom Servers. In the second-to-last developer podcast Mike Chapman mentioned that the team is looking to put more tools into the hands of creators and the community, and I really think that this feature would help transform the kind of video and photo content that currently exists in Sea of Thieves.
Making cinematic videos in-game with no tools besides FoV and Audio SFX sliders is a labor of love, and a lot has been accomplished, but being able to control camera movements, time-of-day, and enemy spawns would make a world of difference.
I know this feature has been requested already and that the dev team has been working extra hard lately with the stream of content being added to the game, so this is more of a "squeaky wheel" reminder post lol. We recently made another machinima/cinematic video and are going to make more, but we look forward to the day these features can be implemented!