Bring down your expectations to a realistic level. Studios aren't going to spend the money to do a full restoration on everything. It doesn't help when most Blu-Ray buyers whine that they should cost about as much as DVDs.
Especially since it's basically a lock that it will be released next year when the fourth film is released, either in theaters or on Blu-Ray. I can see this being released in March, with "movie money" to see the fourth film in April.