I'm sorry, but Great Wheel = 100% pure, cliche, simplistic, unadulterated crap. I never understood the appeal of the Great Wheel- dividing planes according to alignment and populating them with predominantly creatures of that alignment struck me as simplistic and supremely lazy. Then they added redundant planes, non-sensical planes (positive and negative energy for example), and then played make believe that every plane was pretty much a nation. Sorry, thats just boring to me.
I like the 4e cosmology MUCH more. There are fewer planes, but they have a unified theme or purpose, and make sense in the larger picture. Plus, the 4e cosmology is VERY close to the cosmology I came up with for my homebrew back in the 1e days, and still use today.
Material Plane= Terrestrial Empyrean
Shadowfell= Shadow Empyrean
Feywild= Spirit world/faerie
Far Realm= Unnamed place in my cosmology where elder beings were trapped
Elemental Chaos= Primal Vortex, the place where elements merge and creation began
Hell= well, Infernal Empyrean (Hell) in my game too, populated by demons AND devils
Astral Sea= no corresponding place in my cosmology, but I can see why they used it in 4e as a vast gulf between different god's domains
The 4e cosmology is more evocative to me because it fits themes and ideas that are familiar to us from legends, fairy tales, and stories. The Great Wheel is a gamist construct that tries to evenly represent every alignment, as well as some clunky/cumbersome ideas that fell flat on their face in the way they were executed. Plus, so many players got dogmatically attached to the "canon" of the Great Wheel- and anytime I see someone froth at the mouth about "canon", I intentionally change things to keep things fresh and fun (and to cause them an aneurysm). Yeah, I'm perverse that way.

So RIP Great Wheel- you won't be missed here.