[development] Path mapping system

[Khalid B]

At present, I am able to alias any URL

For example, if a module has a page called sitemenu, I can called it sitemap.
If a module has a page called feedback, I can call it contact_us

While your scheme has obvious merits, I see  it only doing this for
nodes, comments, and users. Taxonomy is  not mentioned, but is doable.

The drawback is that we lose the ability to alias anything.