About the 4th edition at D&DE 2008:
Mildly disappointed.
Biggest problem: "Attack actions involve a “to hit” roll against any and all targets, so a power that targets all enemies within 1 square requires a
separate attack roll against each enemy affected."
I thought the main reason to remove the saves was so that you could roll
once for the power of the fireball and check to see which Reflex you beat!
Other problem: "Some powers (like some cleric prayers) will also heal you your healing surge value, and you’ll tick off your healing surges for them as well."
You tick off healing surges from healing prayers?!

Very funny. I hope there are some cleric powers that
restore healing surges, or the low AC guys will get the shaft!
"An extended rest is akin to “camping” and lasts 6 hours. After an extended rest, you’re fully healed, you have a full compliment of healing surges, you have your daily powers back, and you reset your action points to 1. "

Too much neverwinter in there.
That's certainly something I'll rule out as soon as I have my hands on the book.
Good point: Healing surges are tied to constitution. When I discussed with a couple of friends about the rogue we all went: "So the difference between a 15th level rogue with 10 con and a 15th level rogue with 18 con is just 8 hp.

"
No... the difference is that the 18 con one can heal 10 times instead of 6, so at the end, he can endure far more damage. Just not in the same combat.