I've been fiddling for Unity for a while and now trying to make a cohesive game.
Up until now I've found the quickest way to design levels for me is to create a block of wall/floor to work as a "unit", and copy it lots of times.
The blocks are basically just a transform + a sprite renderer + a box collider.
Now my question is: Can this approach bring problems given that it basically creates lots and lots of objects? If so what alternatives there are? Creating bigger blocks?