well i suppose you should listen to the original designer, but as a fellow mapper you should know that a final map usually evolves quite a bit beyond the original scope. personally, i see no reason why you couldn't move this map beyond that of an orange map, as a prop covered orange map is still just an orange map. people associate orange maps with 2 things: new mappers (i.e. the maps likely to have bad gameplay to it), and with cporangex maps, which are basically sniperfest maps.
me, myself would never be happy to leave a map orange/devtextured, as it hurts both the map's rep, and my own rep. (then again i'm trying to make a proffession out of this, whilst for most people it's just a hobby, so i might be being a bit too much of a perfectionist)