Since I've made game development my "full time hobby" (beside my full time job), I don't really have time for reading. Which includes visual novels, so my opinion might be a bit off from the typical visual novel audience. I have however implemented a run-into-story-sections-mechanics in a 3D world in my detective game. This way, IMHO you have to do less descriptions since the world is right there for the player to experience. You don't need to write stuff like "Looking onto main street there was charming little café." Your player can see that far better than in 2D. Besides lighting goes a long way to create the atmosphere you intend.
Of course it's matter of personal preference if you rather create a 3D world or 2D images. I don't think 3D is necessarily more work. I personally need 3D models to get light and perspective right when making more complex 2D images and there are lots of free 3D assets out there (albeit I pride myself to make my own) .
Here is the link to my detective game https://smurjo.itch.io/detective-martin-gunnarson. ASWhalerGamer kindly streamed it on YouTube (link in the comments), so you don't necessarily need to download the game to get a first impression. I'd also offer you to suggest your own murder/accident/suicide case for the detective game which I'd implement and mention you in the credits.