Indeed, what could be so bad?
I wouldn't know where to start. The Lock Screen now has new icons for sound/vibrate and a new horrible distorted font for the time. Which is, you know, allright, I can get past that. Right on my Home Screen they changed several widgets - to worse - like the google search toolbar and the calendar, the ones I use the most. The calendar no longer has the option to display a tiny calendar instead of displaying my next events.
What else can I say? The interface in general has gotten a lot worse - and I don't just say this as a spoiled consumer but as a programmer. Lots of new icons are now much much uglier than before, and some almost seem like they were from a previous version instead of a new upgraded one (like the On/Off swich). Some applications are so bad I'm embarassed FOR them, like the new People application. It used to be pretty, dark background, contacts' pictures displayed nicely, etc... now its a white and baby-blue almost "metro" style app, contacts' pictures distorted... so disapointing. Looks like something someone did it as their fisrt android application and Google by mistake put it here.
Some new stuff that I didn't care about - new app for managing Files, but I already had QuickOffice, so it's just a waste of space.
When you slide the notification bar it now dims the screen progressively - also didn't care for that, I kinda liked the way it used to be.
The new Galery IMHO is SO much worse than the other one. I liked having the little bar in the bottom of the screen to fast foward through the pictures, now I don't have it anymore.
After all of this I have avoided using my phone at all. But the one thing I can not get past is the new keyboard. I have absolutely NO idea how this one is so ****ty. I used to type everything so fast and it would autocorrect me (and correct to the right words) and the prediction system was awesome too. Now I just get autocorrected into some weird acronyms that have NO meaning at least in the language I'm using them, like BWM, TR, etc etc... So I have to type every word like 3 times until I can finally get it right.
Sorry, I don't understand what you mean by that...