I expect Stalker0 to come around and let us know how they messed up this time in less than 10 posts.
Hehe, I appreciate the confidence, but my analysis take a bit of time and work has been draining my life lately.
I will say I am very happy WOTC has taken note of some of the major issues with the challenges, those being that the DCs for each check are too high, aid another is too powerful, allowing off skills at a hard DC actually hurts the party, and that the success/failure ratios don't work well.
There are still inherent problems such as the sensitivity, I'll have to see how that pans out.
For those saying the challenge is now too easy, bear in mind that you can always make it harder. Perhaps similar to a normal combat, the players are supposed to nearly always win those basic challenges. But a DM can always bump the DC up a notch.
Its always easier for a DM to run an easy challenge that the party laughs through and increases the next run, then run a brutal challenge that has the player complaining about unfairness.
I have no plans to abandon my own system, but for those who like the layout of the original, I'm glad to see official changes made.
As for the other changes, I will say that while I appreciate the quick errata, I am disappointed with how much errata is in the monsters manual. There are some serious changes in there, often nearly halving a creature's hitpoints or nearly doubling its damage. Its one thing to change something in the phb that everyone knows and can remember. But often times I'll just grab something out of the MM for fun, and having to go and look up some errata is pretty annoying.