I dislike many of the changes they made to input, especially in the Japanese romaji mode. I liked using the Romaji mode because it makes it really easy to switch between English and Japanese (by providing useful shortcuts for that), but now in Romaji, the \ key becomes ¥ for some weird reason, and they also screwed up the way that accents work (for example, alt-e e to get é doesn't work in that layout, even though Japanese text borrows plenty of words from languages where accents are a thing).
Also I didn't like having the US flag in the corner of my screen all the time but that's a minor gripe.
I think the main thing that bugs me is that there's no longer a way to pin the dock to the corner of the screen. You used to be able to do that with a hidden preference (which was exposed by TinkerTool and documented on many sites) but now that preference is ignored, and you can only keep the dock centered on the screen, which is irritating because it means that things keep on moving around and stuff. Oh well.
On the whole, and ignoring the occasional massive performance problems I have on my Mac mini (which seem to come and go and I can't figure out why), Yosemite's a pretty good upgrade. I just wish I could figure out why my mini is performing like crap now, although I suppose it won't matter when my new Mac Pro arrives in a few days...
Also I didn't like having the US flag in the corner of my screen all the time but that's a minor gripe.
I think the main thing that bugs me is that there's no longer a way to pin the dock to the corner of the screen. You used to be able to do that with a hidden preference (which was exposed by TinkerTool and documented on many sites) but now that preference is ignored, and you can only keep the dock centered on the screen, which is irritating because it means that things keep on moving around and stuff. Oh well.
On the whole, and ignoring the occasional massive performance problems I have on my Mac mini (which seem to come and go and I can't figure out why), Yosemite's a pretty good upgrade. I just wish I could figure out why my mini is performing like crap now, although I suppose it won't matter when my new Mac Pro arrives in a few days...