I like this; it's a nice change from the regular, sappy old dress-up games we normally see on NG's Under Judgment section. And besides, many people (myself included) are fascinated with old or medieval-style armour.
Maybe include more armour/weapon choices? Everyone can name the Spartans, the Romans and even the Templars when it comes to armour choices that stand out. The choices here are limited; only one of them vaguely resembles the Templars. There's more potential for maces, shields, daggers, shortswords and what have you to be included -- and you can include a whole arsenal on them!
Granted, it'll take a lot of prep and drawing, but the time I've spent browsing (online) weapon stores makes me feel that this game needs more content. It should be a bit like a sweet shop, where you WANT to dress up in armour and look like a Roman / Spartan / Templar / anything else, but you're so spoilt for choice.
Considering this began as an experiment and this is different from the vast majority of dress-up games, I am giving this a solid 4 out of 5. I still STRONGLY appreciate it if there should be more content added to it.