I never thought about a open house before but it makes good sense. 360 visibility, no worries about having to get the muzzle out of the house when shooting, less expensive, easier to get into position. Wife liked the idea as well as its primarily for her. Cover the sides with burlap or camo netting and an umbrella for the bad days.
Great idea, thanks.

My biggest fear is when I die my wife will sell my guns for what I told her they cost.