The game is looking amazing so far.
Visuals are definitely a two-thumbs up !
I think it's a great idea to enable players to customize their buildings, decor, etc... it's a great middle-ground compromise if no modding will be available. We city builders tend to enjoy the eye candy as much as the economic/strategy aspect of city builder games.
So being able to choose different patterns, textures, colours, etc for various things can keep the game interesting with the ability to customize whatever look each individual player prefers to have for themselves (we all have different tastes and likes/dislikes). The more choices, the better !
One way to keep a game interesting is to have a ton of different building choices for homes, production, commerce, resource gathering, decor etc... as well as adding new buildings and production lines and different gaming style options along the way for months and years to come to keep the game new and refreshing.
That's why modding is so popular these days, people get tired of the same old same old after a while and want new things to keep adding new interest to the game.
Keep up the great work !