What attractions in Disneyland would you like to see in WDW?

I agree that it is nice that they are different yet the same and I also agree that the rides you mentioned should stay at DLR and not move to WDW. These two rides (in my opinion) don't exactly have a place they fit well at WDW. California Screaming fits better at DLR because of the whole boardwalk theme that is known in California. Yes, there are boardwalks up and down the east coast which is why WDW has Boardwalk Resort but not an entire themed area like DLR.

Other attractions that I think are great at DLR but would not work at WDW are the Bakery Tour (show you how Sourdough Bread is made and the history of Sourdough bread) and the Mission Tortilla Factor, which is now gone and converted to Ghirardelli Factory. My wife and I love the tortilla factor and to this day (9 years later) will only eat Mission Tortillas at home (or homemade tortillas). Even the monorail at DLR is different then the monorail at WDW.

As far as "Art" Academy or official called Animation Academy, WDW used to have one at Hollywood Studios but that closed in July 2015 to stay making room for the new Toy Story Land. There is a milder toned-down version of it at Art of Animation Resort and during Epcot's Festival of the Arts.

I also agree that I (we - wife and I) loved New Orleans Square with Blue Bayou Restaurant and the music would go great at WDW.

The rides I wouldn't mind seeing coming to WDW from DLR.....
1) Roger Rabbit's Car Toon spin - the theming outside the building is great!

2) Snow White's Scary Adventure - I was sadden to hear and see it leave WDW but glad it is still at DLR.  It is a classic and would love to see it return somehow to WDW

3) Mr. Toad's Wild Wild - Again it is a classic and the outside theming of the ride is great.

4) Matterhorn Bobsleds

I guess if you want to keep the parks different then keep these rides as DLR.

Nice choices-

One Note about the Matterhorn - I loved the design and the experience but the cars were way too small- I am 6'3" which is tall but not gigantic, and my knees were ramming into the seat in front of me. It was very uncomfortable and bumpy. ( I still went 3 times)
So if we do bring it to WDW, let's smooth out the cars..

I like the differences, but I am not a fan of sunsetting an attraction. I miss Country Bear Jamboree, Circlevision, and Carousel of Progress.

Doc do you remember Circlevision?  I remember turning and twisting to see everything and glad for the handbag in front of me to keep from falling over....lol

Yes I remember the Circle-Vision shows that were in Tomorrowland and that closed February 26, 2006.  But you do know there is still Circle-Vision at Epcot?

"Circle-Vision in Epcot at O Canada and Reflection of China."

Yeah, that is the point.  I live in Phoenix!  WDW is a budget challenge