Re: Your most wanted Universal titles on Blu-Ray
Hitchcock, mainly: Rear Window, Vertigo, Psycho, The Birds, Frenzy, and Rope.
W.C. Fields: Pretty much any, but especially The Bank Dick, You Can't Cheat An Honest Man, Never Give a Sucker an Even Break, You're Telling Me!, It's a Gift, and International House. From how gorgeous the SD discs for You're Telling Me and "Sucker" look (and sound), they ought to pop off the screen with BluRay.
Marx Bros.: Mainly Horse Feathers and Duck Soup. I'd like to see if they can find a decent print for Horse Feathers.
1930s classics: Scarface, Hell's Angels, All Quiet on the Western Front (all of these have stellar DVDs)
1940s: Arabian Nights (3-strip Technicolor looks GORGEOUS on the DVD!),
Universal horror/sci-fi: Frankenstein, The Invisible Man, Bride of Frankenstein, The Mummy, Dracula's Daughter
Amercan Graffti (1998 DVD is still one of the best transfers ever)
The Blues Brothers