NOTHING IS GOING TO CHANGE FOR THE BETTER ON GOOGLE'S END.
My prediction is when Bing hits about 40% US market penetration that AdSense will start to pay attention to AdSense webmasters but by then it will be too late. People have long memories and being treated like crap for years will take more than a Charmin Wet Wipe to eradicate. Bing will win over that entire audience before it's over and Google employees will be running for cover when the pink slips are digitally dispatched.
I look about once a week at AdSense these days simply because they don't reply to emails even if I do have a problem, and if they do reply it's a link to their help system, which I always say "Don't send me a link to the Help System, I've already exhausted searching it first" but they don't read that or ignore it.
Content may be king, but 3rd party ad systems aren't the queen or even the prince, they're turning more into the court jester.
So AdSense daily up or down, it don't matter to me, it will be what it will be.
However, at the end of the month if it don't be enough it'll be gone.