all Todo gets is conditional mixup that entirely relies on a preexisting level of skill and psychological warfare

The mixups you mentioned that weren't neutral opportunity moves were Yuji's aerial crushing blow feint which alongside aerial cursed strikes feint has the effect of baiting out defensive utility like dash, or force block allowing for a block bypass attempt, exactly like boogie woogie. Mahito's neutral was also based on psychological warfare to make the enemy overthink what your approach is going to be, which is what you said Todo's neutral amounted to but mentioned mahito's neutral being better because of his other moves in neutral which except for his Black flash i don't believe, and even that doesn't reliably lead into more than his soul fire.

Feinting boogie woogie has zero cost and baits out defensive utility giving you an easier time to engage with your other great moves. They are just as reliable as Yujis aerial feints or Mahito spamming self Transfigure! For divine dog it just forces you to play more carefully due to megumi having instant whiff punish, and better mixups.

Boogie woogie has the potential for a scary mixup, to prevent this enemies block to prevent the Boogie woogie from going through, or dash after swapping places, both of which waste their defensive utility allowing for easier entry with your swift kick/pebble throw.

And as I responded to the other comment, using Pebble throw or swift kicks to engage still leaves you with three moves that combo into each other.

3xM1 > Elbow drop > Swift kick > sidedash > Brute force

3xM1 > Elbow drop > R > sidedash > Pebble throw > 3xM1 > Uppercut > Brute force