I instantly love this show more...
I bet the shortest skirt that female Houtarou owns is her School uniform's.

This would be pretty interesting too.

Would love to see Chitanda Eru genderswapped nagging Houtarou.

A genderswap of the whole cast could be interesting too, though I personally wouldn't want to see yet another all-female cast setup. The dynamics and perceptions of the Classics Club might certainly change if Houtaro and Satoshi were girls, while Mayaka and Eru were boys...