not matching expectations.
Yes: "Wow!"

I knew from the information I had before that the Maemo5 UI wouldn't be one I would love to work with - simply because I'm the "my N800 is my laptop and runs Gnumeric" type of user and I understood you're not heading my way. (Which is OK, you got me under your spell meanwhile and I'll move your way if I have to.)

But (or rather: Therefore) I also expected the Maemo5 UI would make me go "Wow!" looking at it, if not using it. Clever design, revolutionary ideas, best in class, something you look at and say: "Of course it has to be this way! Why didn't I invent this?!"... Something that's just cool, beautiful, sexy. Something that makes St. Jobs want to buy one.

Now we have missing "Cancel" buttons and menus in the wrong places (breaking the most basic rules of graphical UI design), wasted space and strangely re-positioned buttons, squeezed lists and whatnot, all for no apparent reason other than "because we can". (Or so it seems - I wrote above that I still think it all will be different when the real thing's out.)

These are the things I'm referring to when talking about a "Maemo5 UI", not the (mostly missing) part "outside the applications".

What we've seen so far were some screenshots of new widgets (maybe even from a pre-Alpha?) that are particularly uninspired (and no, I'm not referring to theming or the missing labels).
Mostly, however, there's what you call "legacy application UI". Personally, I had expected that they should look as good as on Diablo, if not better. In reality they all look more or less broken, with captions being cut off and lists showing only part of their contents. (see this and this post for bad examples.)

So yes, it's about personal expectations... after all, if I liked Diablo, I should love Fremantle, shouldn't I? Now I find I don't really. All I've got is the hope that as Fremantle will grow out of alpha-stage, it'll grow on me.