gold, blue. All this designing to a level is getting silly. Sure it is great to make a gold level course where par is 1000 rated or better, but those gold level courses can also be enjoyed by blue, white, purple, black, orange, green players. You don't have to design a course to only be for a certain skill level. How many 1000 rated players are there in the world?? Why would you design a course just for them?
If the hole averages less than par for the gold players, so be it. They are gold players and should be the bets players in the world and should score well on every hole. If they average less than par, what is the problem? Aren't they the best players in the game? Can't a gold level course have a few blue level holes thrown into the mix? Does the fact that those gold level players score better than the actual par really matter? Isn't it nice to have an easier birdie hole every now and then.
I'm making my course orange and black polka dot tees. While red level players may have a hard time on a lot of these holes, they may find themselves getting a birdie every now and then also.
Course design should follow one rule. The course should be fun!