Great article. A few points:

1. remake your idempotent statements to "if not exist create, then alter", rather than drop/create.

Example:

if object_id(N'[schema].[sp_proc]',N'P') is null

...

Found unicode characters in the script, otherwise was fine.

Added FILLFACTOR to the script - important!

1. added declaration at the top:

declare @fillfactor int

2.Added the assignation...

This was an elegant solution to what has been a plague on our DBAs during migrations from old systems to new - particularly with COTS databases that routinely use character...