On most of your points, I totally disagree.
First, while Jim IS the relatively sane one (and functions in many ways as an entry point for the audience), it has been demonstrated on numerous occasions that Jim's more a product of his environment than he'd like to be (ex. the time he tried to consolidate all the birthdays). The introduction of an outsider element in the form of a new boss works well to show off how much Jim really has become integrated into the Michael-run Office.
Also, Dwight is not uniformly loyal to Michael as much as he is loyal to Dunder Mifflin and company hierarchy in general. Michael as his boss earns his de facto loyalty, but his first duty is to the company.
Ryan has never been shown to be anything but incompetent. It's mentioned frequently that when he worked for the company, he never made a sale. He has education but has never been able to translate theory into practice.
The one thing I do agree with is that I hope they will eventually return to the Dwight/Angela chemistry because that was left largely unresolved. But I'm willing to give it time and not start criticizing yet.
The Michael Scott paper company I don't think forecasts a permanent change in structure but it's an interesting development to play with for a few episodes and a good way to shake things up (especially in regards to Pam who has been looking for some upward mobility for a while now).

I agree with Amy and Marc B. The show had gotten stale, and I think MSPC has given it a shot in the arm the past two episodes.

I'm fine with revisiting Dwight and Angela, but not quite yet. The love triangle storyline went on way too long. We could use a little break.

I think the producers were right to shake it up for awhile -- the show was on the verge of staleness. The Jim-always-adorable shtick was really getting old. I was ready for Dwight & Angela to be over when it ended; they'd already resurrected it once after ending it, and yet another go-round would be tiresome; the fun thing about them was always the original surprise that either one of them could be in a relationship at all, and they don't have the potential to live happily ever after.

Dwight and Andy's new bromance was great -- it's fun to see Dwight actually like someone, even if temporarily. an/Michael was totally played out and ended at the right time.

I do agree with the blogger that Pam asking for her job back after Michael so wonderfully dealt with her meltdown was a false note, it was refreshing to see Michael handle someone well, just the once, and that ruined it. I also agree that Stanley's new role could be comedy gold, but there's lots of time for that yet.

The new credits were fun. I'm actually looking forward to seeing what happens next week, instead of the "meh" I'd been feeling lately.

apparently rebecca needs to check the portion of her brain that judges comedy. So you want the show to remain the exact same as it did in the 2 and 3rd season? Never changing or taking risks? So right now you would be complaining how it's the same thing every week?

Like the rest of those that have left comments, I agree these changes are what the show needed to bring it back. It's an incredible improvement.

I think MSPC is a great way to shake things up while still keeping all the key players in close proximity. Is Rebecca watching the same show as I am? Ryan has never shown "business acumen". He has education - but remember how terrible he was on that sales call with Stanley? And whoever said above that Jim is a product of his environment is completely right. He is somewhat of a slacker. That was always tolerated on Michael's watch. But Charles is noticing all of Jim's faults and this is just making Jim behave more and more unprofessionally. That rings true to me for the character. He never had to kiss up before. The only two points I agree with on this list are Stanley as productivity czar and Pam begging for her job back. I'd love to see more Stanley in that new role. And Pam begging for her job back seemed really unnecessary and out of character. I would rather have seen her go on to a monster.com site or be calling different businesses for an interview than beg Charles for her job back.

It's certainly not as fun as, say, season 2, but I'm not sure I agree with those reasons.

I think Jim's acting exactly as I would expect. I think the Angela thing was handled nicely, too. It's not like that was some epic love story. She was kind of a whore, they both saw that, and moved on.

I hope MSPC sticks around awhile, though, and they don't just boot Charles and make Michael boss again to get everything back to normal.

I just wish we saw more of Pam and Jim. They've always sort of been the heart of the show, and now we only see them apart from each other. It'd be nice to see their house again, or that wedding should be coming up soon.

Jim has always been the most compelling individual character for me, and I've enjoyed the challenge that Charles Minor represents. Jim's always been charming and has been able to get away with a fair amount because of it. He's a good guy, but most of the time he doesn't have to question himself. The fact that Minor isn't charmed, the way that Jim has responded (lying about soccer, nervous humor, etc.), and way that he is having to consider himself through the eyes of someone else is interesting. It's also uncomfortable (in time honored "Office" fashion) because we've all had similar experiences.