K guys, here is another quick shot of a mockup.
Think it is obvious that I was inspired by the sweet UI of cutetube-QML created by the great Marxian , so all creativity credits go to him
(Hope you don't mind Marxian)
As some people stated they would prefer a dark UI, I decided to stick with the dark theme of cutetube-QML, but I think a similar layout can also be created using a white and blue theme (which I personally would still prefer ;-) ).
This time I also tried to have a less FB-oriented, more experimental UI concept (again somewhat adopted from Marxian ;-) ), not sure if its really usable though (srcolling in the "small" boxes might be hard as well as finding a spot for tapping for scrolling to posts further down).

Bottom line, in the first place, I see this as an experiment to see what might be possible and usable or not and for inspiration for more ideas (from you guys ).