The blue print offers even more options - I so love this (and I can save the plans fine now). Is there a chance that one day we can either add our own blueprints, or even better, just fill in the squares we want as the 'footprint'. Sorry to be greedy.
48 days ago(+1)
You can fill in the squares now if you click!
As @headzombie said, that's what this editor is: click a cell to invert it or click and drag to draw, then press Enter to build a mansion from that blueprint.