Edit: I don't believe I know if you settled on Gs or flashback with compiz - if the latter then below is irrelevant..
I guess if one knew about Gs/clutter & .js files it would be possible to make some changes to the switcher popup, myself do neither.
And just to note that Gs is quite picky about it's .js's, one little error in one .js & it won't start up, so messing with requires either one doesn't care or has a backup plan to fix. (those are both for me.
Anyway, maybe because I'm a lefty my focus on the display is pretty much the left 2/3's, the far right is sorta out of the way.
So it was pretty easy move the pop up to the far right & lower the display time just a bit, the default is 600ms which is about right though I did lower to 400