A principle of LCCs is that they operate one type of aircraft (or series of aircraft on which all pilots can fly) and that the aircraft and pilots can fly on every route. This does, of course, maximise commonality whilst also reducing training and maintainence costs. In addition, if you only operate one aircraft you can secure bulk-buying deals (economies of scale) by buying large quantities of spares, for example, for your one type of aircraft. All of this increases the all-important efficiency by reducing costs. UAL's LCC will initially go against this 'rule'. I wonder, then, what the result will be.
"Everyone writing for the Telegraph knows that the way to grab eyeballs is with Ryanair and/or sex."