Maybe Ford is missing a trick? Perhaps the definition between ST1 and ST2 should be clearer marked as I would like to see an RS model but can't believe one is coming?
Maybe have the ST1 as a barebones track-hatch. Ditch the DAB audio, SYNC, Quickclear, A/C, Fog-lamps and MyKey (but make the style pack mandatory) and knock a £1000 off the list price.
Then possibly make the ST2 as the performance commuter cruiser where you simply add everything back on, give EATC and Sat-Nav as standard and then add £500 to the standard list price.