There is one other thing that has irked my ire about 4.0 and that is the lack of adventure module support. I could have lived with the changes made if they had kept the support going through written adventures that explored familiar ruins and places. Forgotten Realms is just starting to see new releases this late into the production run and they are hardback books detailing places like Neverwinter. Great for reference material, but I won't be running them. I don't like how they did away with campaign specific modules and ran with generic ones that were over priced and not really giving the value I expected out of them.
often used modules to advance storylines and let players have a chance to do things differently than what the novels presented. They also fleshed out areas of the game like important cities, famous dungeons like Undermountain, etc. The only reason any of my 4.0 Dark Sun games were good is the library of 2nd edition resources I have for running these games. Hasbro only produced setting books and left it at that.
I really hope that 5th edition turns things around for them. I've run this game since it was in its 1st edition (No I am not buying the reprints of those books, the cause is nice, but I am not paying the prices they want for books I will never use to run a game) and overall I felt the best versions are 2nd and Pathfinder. 3.5 was nice but pathfinder fixed some of the issues I had with it and rounded out the game nicely.
If your wondering why I won't do 1st edition, its rather simple, it was a nice system to start with but 2nd edition fixed a lot of the problems in it. The reprints are overpriced for what used to be very affordable gaming books. The other reason I have for not picking up the books is that it will just be reprints of the core set, nothing else from that edition will see the light of day for reprinting purposes.