In what way? Becasue they have ESB figures or becasue they are not all TFU?
Pick one....(ala Wolverine-X-men the movie)
Seriously though, both. I don't have a clue as to why ESB figures into this and thought the whole collection of TFU minis would be that era specific. Now if there is a tie in to ESB with the storyline, okay it makes sense. However, if there IS a tie-in, then I'm not going to look forward to this as much as I thought. There really doesn't need to be a tie in with every other story in the SW galaxy. The galaxy is too BIG to have only a couple dozen players controlling it all, IMO.
If ESB doesn't figure into the TFU storyline, then why the heck have those minis in the line?