I'm one of those people who think OS X's ability to auto-rotate desktop backgrounds is one of those little killer features that just does it for us. As such, I've a large array of disparate desktop backgrounds: some very high contrast, some low, some very dark and some very light. So you can imagine the transparency used in 9A410 caused more than a few problems, especially with certain images. As they say, a picture is worth a thousand words, so it's time to be loquacious:
Sure, it's legible, if you sit and stare and the text for a while. But keep a bottle of Advil handy, because your head isn't going to thank you for it.
I've enough backgrounds like this that 9A410 was - at times - almost completely unusable (until I switched the background of course, but I'm lazy). As any Machead knows, the menu bar is pretty much the only system-wide UI element that you simply must be able to see and have quick at-a-glance access to at all times. (In fact, while many people chide me for it, I auto-hide my Dock and pretend for the most part that it doesn't even exist: Quicksilver FTW, baby.)
So after all this, what has Apple learned?
Well I'll be a monkey's uncle.
Exact same background, a few months of extra development time for Apple, and we see a world of difference. Now I'm definitely on-board...
...at least with regards to the menu bar.