The main thing I wanted save-anchor to be allowed to Standard for was explicit "newgame+" modes, and it's the most objective thing. But just like with codes, there can be other in-game goods that are only unlocked post-completion, and I feel we should treat save-anchor similarly to codes that unlock things. So as long as it remains its own branch, it should be fine in both of those cases.
I don't want save-anchored movies to compete with power-on ones in Standard, because the former kinda give themselves a handicap which would somehow not count as a part of its completion time. I feel it's fair to instead have more branches. But in Moons, I think we can obsolete goals with and without save-anchor if they are too similar, and if there's consensus. I'd argue save-anchored would generally be more entertaining.
I can't come up with ways to verify legitimacy of save-anchor other than by making a verification movie, be it the author who makes it or the judges. I'd argue it's generally harder for judges to make one because they may see the game for the first time and be unaware of gotchas. Without a verification movie, what do we even compare the provided save-anchor to? Simply editing RAM to flip some flags may not be enough, even if there are online resources that explain how memory is mapped in a given game. In order to verify, we will need to complete the game ourselves. And even if we poke memory to skip directly to the final boss and beat the game that way, there's still too many variety and unknowns. I would not want that in Standard. But I may be fine with it
in Moons!