Is it possible to reorder spaces in Lion?

Question

I would expect 'Mission Control' to allow me to drag spaces in a certain order (with the exception of the 'Dashboard' space), but this does not seem like an option.

This would be especially useful when re-ordering full-screen apps: for example, opening iCal and then opening Mail fullscreen would result in Mail being 'spaced' after iCal. But what if I'd want Mail to have a higher 'priority', thus wanting it spaced before iCal?

Is there an option to re-order spaces without recreating them entirely?