Paranoid Android has came along leaps and bounds since I first tried it on my SGS2.
This phone is much better equipped for this type of rom though and the whole UI is a great experience and step away from the norm... love it.
I do realise there is an "exanded desktop" option when holding the power button, I have also set the status bar to auto hide but I'm still finding the good majority of apps do not force a full screen display. Angry birds for example... not a deal breaker, but a bit annoying. Is there another setting somewhere else I am missing?
Also, if anyone else plays "Klondike" (best solitaire app on the market) and can get it to display like it does in normal phone mode, can you tell me what settings you used? I ended up just making it VERY large haha