How about a speedrun where you beat Undertale, Deltarune Chapter 1, and Deltarune Chapter 2?

And there can also be a all routes, where you do Neutral, Pacifist, and Genocide in Undertale, Main route in Chapter 1, and Main route and Snowgrave in Chapter 2!

I feel that would be a multiple game page similar to the Halo Bungie Trilogy instead of under the Deltarune page Maybe you yourself could request this as a new game(kinda)

Might be an interesting CE idea once all of the chapters are out but I don’t think the mods are interested in that category yet