If the game has sufficient enough creative freedom to artistically design your town in a unique way, then I really find the aspect of going first person and walking around in games like this very very fun. Especially if there is added gameplay to it. Like in zoo tycoon 2 you could clean up the animal exhibits and refill their food and water and brush the animals and stuff in first person. It was a lot of fun. Now in planet zoo there isn't gameplay elements to going first person, but at the very least it's still a lot of fun since the majority of the game is so creativity focused. It really makes you look at your Park from a New perspective and really design it from every angle.

If every town is going to look exactly the same and do the same thing though with not enough creative input from the player and how roads are laid down or designed then I don't think that's going to add much

I think it's an attempt to create a differentiating feature.

In other games with this feature (e.g. Tavern Master), I used it a couple of times just to check out my Tavern in first person, but that's about it.

Now if there were additional gameplay element built around that, it would be a different story.

Slightly different gameplay but I do still want to play Transport Fever 2 sometimes, even though I’ve played Transport Tycoon/OpenTTD for decades at this point.

I could see good attention to detail being a draw.

Do you have to do it?

I would hope not, that would definitely be a deal-breaker for me.