Your suggestions highlight what I hate about the new Android gestures interface. You have to know those patterns in advance and remember them. They aren't visually apparent like scroll bars, drag handles, titles bars, and window frames. I am quite versed in keyboard shortcuts, but keeping *all* of them in my head gets a bit much sometimes. When I forget one, rediscovering it is a serious PITA. The rediscovery (or initial discovery) is orders of magnitude harder for things like the Android gesture interface.

Couple this with App and OS designers feeling a *constant* need to change things and make them "better" and you have a disaster in the works. I've been grousing about Android changing things just to change them as I get older. The other day even my 12 y/o daughter was complaining about them changing how things worked.

Anyway, my point is simply two-fold. First, any UI that requires knowing and remembering interactions that aren't easily discovered *is a problem*. Second, constantly changing UI interaction patterns, even when they are discoverable, *is also a problem*.