[quadratini]

typical designer. they just look at static mockups and don't think about interactions. okay if you have the 2x2 icon, how will other icons move relative to it when the big icon is moved around?

[samuli]

You might want to take a look how Windows Phone 8 does it. WP8 has different size tiles and moving them around is a piece of cake.

[cpursley]

Exactly. WP tile resizing is fantastic. I'm not sure I could go back to iOS, even with it's app ecosystem.