Curate, connect, and discover
I was watching a P.M. Seymour video and it mentioned the possibility of a undertale movie and I would like to add that we should ABSOLUTELY do a CLUE.
as in multiple Endings shown depending on your theater, The ending being Neutral, Genocide, and pacifist of course, the deviation point could be either the very start of the ruins or somewhere like when you kill papyrus.
Another thought is during Asriel Pasi fight you could have the entire room have LIGHTS and glare random rainbows :))