Imagine the kind of writing we could have gotten with the 7 flowers could be cool, but likely will be overshadowed by "Susie and Noelle are heckin wholesome cute lesbians":
Another two writing ideas.
First is something that could have given actual weight to the events of Ch.3 instead of practically ignoring the effects Ch.3 and Ch.4 had on Hometown:
We could have overheard several conversations discussing the rumored disappearance of Undyne, and the anxiety that's causing. People could be arguing about who should step in to replace her, complaining that Napstablook is just too meek to be effective. We could have overheard an argument that goes something like "It can't be Asgore, not after what happened all those years ago", "Well why NOT Asgore? He was the best we ever had!", "He may have been, but he's a mess now! No wonder Toriel left him". It would be a good way to show old scars on the town that hadn't fully healed, tease out more Dess lore, impress on the player that the entire town is traumatized by whatever happened to Dess, and show that Kris' reputation is also tarnished by his Dad's messiness and parents' divorce.
Second is relationship drama that likely will not happen in the Ch.6 normal route, as Susie and Noelle are just heckin' wholesome cute 2-dimensional lesbians:
We find out Noelle's dad is either in terminal decline, had a major scare, or is dead, and that Susie and Kris were nowhere to be found during this crisis.
Susie may insist that now is the time to let Noelle in on the secret, and Noelle's reaction may be quite negative: "You... you're telling me while I was having the worst day of my life, you were in here, playing with these... these THINGS?" Could drive a wedge in their early relationship, and put Ralsei's budding independence to a halt and throw him into a bit of a depression, reminding him that he's "not real".
The situation could spiral into Noelle spilling the beans to her mother, having Castle Town be exposed, somehow leading to the roaring when the Lancer Fan Club either gets arrested and can't stop the knight, or maybe having all the residents of Hometown try opening their own fountains. We could then get a nice reunion and see Noelle reconcile with both Susie AND Kris.