I think if you want to do complex things in OpenSCAD, you have to use someone's library or write your own.

For example, I wrote centering code that basically work for arbitrary length, which then become a frequently used part of the codebase. Then when I faced the limitation of the centering code, I wrote more code for arbitrary subdivision of elements.

I haven't extracted the new arbitrary subdivision of elements out into a module for my library, but I will eventually.