I feel like a ~3 hour version of this, cropped shot by shot to 16:9, with tasteful additions from the Whedon cut and the unnecessary future/epilogue bits removed, would be ideal. Some restructuring of the earlier acts would also probably benefit the movie - someone on reddit suggested shuffling some of the Lois mourning stuff earlier and I think that’s a good call. Trimming out some of the excessive Aquaman stuff would also probably be welcome, since unlike Cyborg or Flash’s backstory stuff, it’s not really emotionally engaging or relevant.
On the other hand, part of the fun of this existing is the ridiculous assembly-cut esque length and the 4:3 aspect ratio and I think sanding away Snyder’s excesses would lose a bit of the personality of this version. Then again, I would never rewatch this uncut.
It seems like this movie is like the anti-TROS as far as fanediting goes. Glacial pace, practically nothing at all deleted, and there’s a whole other version of the movie to steal extra bits from.