Don't get me wrong, Cosplay would be a good idea. However, wouldn't it be more resourceful to have a new "Cosplay" tag in Arts and Crafts?
Well, looking at the scope of Arts and Crafts. It certainly seems that it would cover a lot of the 'crafting' parts of costumes and props. But cosplaying encompasses quite a bit more such as.
The last of which would probably be better questions for SO or Arduino SE
All together I do think that Cosplaying (Costuming) is a broader aspect than Arts & craft alone can cover.