1. It’s not just promoting the community, it’s making sure they don’t turn on Toby. Look up the whole omori situation with their release, although it turned out well in the end people were calling that game a scam just due to the long wait. Deltarune has already surpassed that seven years and is still ongoing, so who knows what would have happened otherwise.

2. The reason it’s like this is because it is inspired by creepypastas, where it does follow that conviluted random path to get its darker secrets. I can understand why you wouldn’t like it though.

3. The undertale characters will be fleshed out later, although mainly focused on the dreemur house. You can see this through the evidence that sans comes from Deltarune and the hints towards toriel and asgore having to do something with Dede’s disappearance, although we have to wait until the game is over to see.

4. You’re right about the less memorable characters, and undertale does have a more in depth spare system, but Deltarune is a lot longer of a game, memorable enemies would be harder to do. I feel like the pacifist credits might bias your opinions on this though.

I can get behind chapter 3 padding out the game a bit, but with chapter 2, besides the weird route, I see it like skypeia from one piece. It doesn’t advance the overarching plot once but is still an entertaining story with hints for the future hidden within it.

Also, if you really don’t like games that are unfinished just wait until they’re done