Athena statue/s can be used to either;I'm only in 1 World so the WWs are of no use to me, SoKs are handy space fillers but will stay in Inventory, Tholos is done anyway so that gem is surplus to my requirements and I'm not in need of 4x5 Production Buildings; they simply take up too much valuable space for very limited returns. Athena looks OK in place, if a tad small and I think Artemis will replace SSW next. All in all, it's turning out better than I expected, apart from the WWs which are OK for DFs and unwary Noobs. One Goddess per Round would be fine with me, if I can shuffle enough around to find places, if not then my SoKs will go to make room.
a) replace 2x SoK, thereby saving 2 squares worth or space + a daily polivate.
b) replace a SSW to effectively double it's output.
If you've got any of the Athlete's Villas or whatever they're called, (ie: the 4x3 that give +def% and goods), you *could* replace it with an Artemis + Hera combo to get roughly the same bonuses, but replace def% with the more poplar atk% boost.
That however will chew up an extra polivate every day, so kind of a sideways trade there.