Variable Dimension Objects

As a user I would like to have object variability for things that don't quite fit the objects currently defined.

Example: I recently had need of a set of stairs in a corner that was supposed to be 2 on the x and 3 on the y. Both up and down with or without landing would be great too.

Having input parameters and programmatic scaling in variable directions would be ideal for this. Obviously, this would be a bit of an overhaul of the existing object system but should be possible.