I am developing a game in Unity with a team and have decided to create a level editor to conveniently lay out street modules in a street as other games can. However, to make things more interesting, I want to distort the street models and adjust the curve editor or elevation or length and breadth-- all within Unity rather than an outside application. I say this because I cannot do this in Unity while linked to a modelling software like Maya. It seems to require playing with the model’s vertices. Is this possible?
Yep. You can access/create meshes with MeshFilter to change the vertices, tris, normals etc.