If you think about it, I think Franklin has one more good fight at 185 with Henderson but I guess that isn;t happening.
Franklin has no choice but to go to 205. He can't accomplish anything in 185 and he can;t drop to 170. I really don't think he knew Silva was going up to 205 but I really dont see it as a problem.
Look at the LHW division. The title was really important during Chuck's title reign but if you ask me now, I think the title isn;t what is making the division so exciting. Think about one of the biggest fights last year. Liddell/Wanderlei. It didnt take a title for that fight to be huge and even though Wanderlei lost, to me, it was a big fight for him to be in.
Franklin is going into a division where he will be surrounded with exciting matchups that will increase his fan base even if he loses some. I'm sure he is looking to try to get a fight with Liddell, Wanderlei, Forrest, Machida (Rematch), Rampage (with or without belt), ect. to further to his career accomplishments.
To sum it up. The middleweight division is weak and the title is 10 x more important there then in the LHW division. Franklin is making a good move and has enough match ups to not have to run into Anderson for a long time