1. Better Circle Algorithm
See Marc Edwards' article at http://bjango.com/articles/illustratorandappdesign/
2. Gradient Dithering
Photoshop is finally able to dither gradient layer styles so it can't be that far fetched. Again, Marc outlines this in his article.
3. Inner Shadows
Although I have fine tuned my workarounds to the Nth degree, it's still not as simple as photoshop. 1a would be to have the drop shadow setting produce the same result as Photoshop when using pixel measurements.
These 3 features plus the new pattern editor would (in my opinion) make Illustrator the best UI design tool currently available.
CS6 is done. Not sure why we need yet another thread about it... Anything not listed on the product pages just isn't there. That's the long and short of it.
They don't list Layer style gradient dither in Photoshop's feature list, but it is in CS6. I don't have acces to Illustrator CS6 and would like to know if these features/issues have been addressed. Have searched high and low on the net to see if anyone has mentioned any of these things and have found nothing, hence me asking on the forum.
I wouldn't expect Adobe to put 'Now with better circles!' on the feature list.