Expanding ship options is a great thing to keep the game fresh, but I feel the Empire is getting a little silly with all of the TIE variants. As long as the TIE shows up in a movie, I guess it doesn't matter, but how many wings can you attach to a little pilot globe until it doesn't work any more? Maybe that's a design issue for Disney/Lucasfilm to address.
To keep selling plastic ships for Empire, while keeping their style in check, I was thinking more ace expansions would be more fitting? New paint styles, new gear cards, and new aces would keep the hate flowing without seeing TIE fighters with 16 wings running around.