For a bit of trivia...it has been suggested that this is more of a Gun X Sword rip-off than an Evangelion one, appropriately so since Taniguchi himself directed that show, though the result is largely the same since the basic idea does go all the way back to the source (Eva) regardless.
That's more than fair enough, I'd think.
I also agree that it's a good thing this didn't just end with Lelouch becoming Emperor.
That would be a nice ending for a season, as it has been in a certain other show, but a poor ending for the show as a whole.