I actually like the 'flat' look, but one thing I hate is the drop-down menu in Chrome for Android. Here's what I'm talking about: http://goo.gl/41iRZk
When the menu is displayed it takes about half a second to display. Every menu item is...slowly...faded...in...one...after..the...other. Give me Windows 3.1 where you click and the menu displays instantly!!
Amusing and sad to watch mobile evolution recapitulate desktop design, not skipping over the dumb ideas.
I've done usability tests where these "issues" came up, whenever a dropdown or any other form of interaction suddenly popped up and the user had to spend valuable time to re-focus to find out what exactly happened and if this was indeed the right control. Additionally animations are also very useful for transition purposes. Guiding the user from one screen to another can be quite stressful when it's done in an instant and the user has to understand what's happened. This is why Apple's guidelines to transition the screens in a horizontal motion were so damn good, because they allowed users to spatially recognize their "position" in the UI. And I'm glad that the MD guidelines now also state that transitions have to be spatially correct and a screen transition isn't just a window jumping out from the center of the screen. [0]
Of course these animations are only temporary and can only help you so much, but they're very good for consumers when they are noticed. And that's all they really are: helpers, not the sole messenger of the meaning of the UI.
But of course I understand the plight of delayed interactions. UI lag that is caused by hardware aside, they're really annoying. But I see that more of a problem of customization. The OS should allow to switch off any animation.
[0] http://www.google.com/design/spec/animation/meaningful-trans...
"Best practices - Support spatial relationships through consistent motions for incoming and outgoing elements."
Here's an excerpt from the review:
"Unfortunately, there’s so little ornamentation that there are no cues left to tell you when something is tappable. What’s a button, what’s a label, what’s a heading? You won’t know till you try tapping."
Full review: https://www.yahoo.com/tech/android-5-0-lollipop-lighter-simp...
And this gem: "In Android of old, you could swipe down from the top of the screen to open a panel of quick settings buttons (brightness, Airplane mode, and so on)." Which tells me the reviewer either has a poor memory or has confused Android with Samsung (which is an honest mistake to make).
Additionally, IIRC swiping down on the right side for the quick settings is default in a number of ROMs.
And they decided to do it with shadow, animation, and contrast.
Maybe there are better ways as well, but the end goal is sound.
In general I feel like surrounded by the Microsoft paper clip. There is constantly something animating, popping up or popping with strong colors into your eyes.
Try to find in all the talk about material design the underlying reasons for usability. There aren't any. To me it feels like the emperor's new cloths.
I was about to buy a Nexus 6 but the new Gmail app is a no go for me and I will avoid it as long as possible.
For what it's worth, the underlying usability really is very well explained and pretty sound in the material (no pun intended) from Google on MD. Eg: http://www.google.com/design/ in the top 2 items.