This game really needs a boss rush. Obviously, as in every Touhou game, the most entertaining part is the confrontations against the bosses, it is the strongest attraction it has.
I would like to revisit them to face them, as in other Touhou games where that mode is enabled.
But I don't feel in the mood of having to play a whole level again, and then another level just to see the bosses again.

It wouldn't even bother me to pay a dlc with that function.