additional functionality to window previews plugin in compiz

so i have an idea to add extra functionality to thisplugin

now it looks like this

after moving mouse over the process name on taskbar a small window with application thumbnail appers

it would be really something useful if there is an option in this plugin to add following functionality:

after moving mouse over taskbar, also a popup appear, but it doesnt contain thunbainal, but full size, or little reduced size of certain window - but of course not the whole window, but only a part of it, also there would be an arrows, to move preview

this would be very useful because you could check what happens in other windows without need to switch windows,

this would be escpecially useful for software developers, web developers etc