Improve the look of the shell

Hi, i have some suggestions for cinnamon concerning the "look". In kde, there is a possibility to have a preview of the windows opened (passing the mouse over the panel with the opened windows bars). Can you do the same for cinnamon? One more thing, in gnome 3.8, clicking with the right button of the mouse in the desktop, appears the menu for change background and open the control panel and this menu uses the gnome-shell theme. Why don't you apply the same thing to cinnamon? It will improve the look like of Cinnamon! 
One last thing, is possible an update of the gtk libraries? I know that the new version (3.10) has some enhancements and will be the last version that will support basically X.org. Is possible update them?