Let's take for example this screenshot...
First line is PhoneAlarm.
Second line is Spb Mobile Shell. Those big icons actually open tabs that have shortcuts (icons) and other functionalities.
Third line is SBSH iLauncher, and I think this is what you are looking for. I personally love it!
As far as the lines, no, they can't be removed as far as I know but if you have a solid background image just change it to match that color.
BTW, this has been discussed all over the place
