here comes a request, not for a feature but more for an software wich uses the same base.
I searched a while for a simple sandbox where i can install programs on, but wich is completely system-independent (not os independent)
the best would be if all the fish is in one single file (so the whole virtual filesystem and all the data)
so u can put it onto an usb-stick and run it from there
all the silly pay-ware would be dead and it would be sooo simple

in my mind is something like an wirtual desktop with its own window on the real desktop and all the apps are encapsulated within
ant when u put the usb-stick into u pc and autorun is active the window with ur very personal desctop pops up and u r free 2 work completely independent from the software on the host pc