Implement the support for short URL Alias Path using only the last content item name, or the ( n ) last content item names, or the 1st and the last.
Could be defined by a setting like ( n )*( m )
Main/One/Two/Three/Four/Five:

if n=0, m=0: /Five
if n=1, m=0: /One/Five
if n=2, m=1: /One/Two/Four/Five
...

more in the related improvement suggestion.