on Pinside they were saying that designers like John Borg designs a pro and then adds features for a LE so tends to be a fairly full game and Steve Ritchie tends to design a LE and strip it back - in this case stripping out the playfield turns this game into a whole different game - would of preferred taking out the ram, some lighting features and some inserts.
Also they were saying on the C2C podcast that the rules and gameplay is a little different as it is believed that you use collected gold coins to upgrade weapons and possibly cause more damage / more points / game progression hence the apron button on all 3 game levels - cool new innovative feature