Ok and you are also assuming stats. Seriously, it IS TO. You are assuming that they have the spells you want, the powers known you want, the Stats you want, etc. There is nothing that says that they should have anything but the classes that you might want. They could be a Wizard, that is a focused specialist banning schools that you particularly want, and they still meet the structure of what you are attempting to get. Also, it specifies that you MAY attempt to attract followers of a particular race, class, or alignment. Followers/Cohorts/Thralls are all strictly DM's choice. Also, there is no guarentee that you can shuffle the feats that they have. If they have the same feats you do, you don't get the feat. The feat is overwritten as per Fusion. If the feat doesn't exist, you cant shuffle it.
As I said, it is a great build. But there is simply so much that is requisite on DM perspective. Also, if you lose Genesis and CoP, that certainly gives an edge back to those that were trying to defeat you. I really think that there is too much in your build that relies on the DM allowing liberal interpretations, very min/maxed cohorts and such designed exactly to your specifications, etc. And again, I don't see how this would play in a game. If given all of the things you want, it makes every party member useless. Hence, it is in fact Theoretical as it would not see Practical, or Actual play.