DL can be a lot of fun! The new California parks has some things in it that you won't find at WDW, and the Indiana Jones ride at the DL park is great! Also, they have a Snow White stage show that is cute that you won't find anywhere else.
My FAVORITE thing that we found at DL was in their version of Innoventions (which is set up different than the one at WDW). They actually had a place where you get to REALLY try a Segway (those motor
scooter things with 2 wheels). We saw a Demo at WDW, but they didn't let people try them. You have to be 16 and sign a waiver, but it was FREE and so neat!
Anyway, I think it would be well worth the trip. I admit, WDW is better over all, but if you haven't been to DL in a long time you will be pleasantly surprised and you will get to see some great new Disney things!
Our family (including my girls) really loved an exhibit at the California park where you learned about how animation is made AND they had a place where you got to record your own voice for an animated clip. That was cool!
Go visit the DIS board for
Disneyland. Those people were GREAT in helping us plan our trip.
Good Luck!
DJ