I'd like to see a future sulpt armed with the unusual 4 bladed/pronged dagger that was apparently used by some gladiators in the later Roman period.
Initially known from some indistinct images on gladiator monuments/gravestones may thought it was either artistic licence or misinterpretation of indistinct carvings
However the excavation of the gladiator cemetery at Ephasus turned up one body with the distinct impression of 4 'point' wounds in a square pattern on it's femur, the image below is a reconstruction of such a weapon (the image is from http://journals.worldnomads.com/bundynb ... -The-one-o)
It's not clear how this weapon came about, speculation includes that the 4 blades were intended to cause bloody, but not debilitating wounds (so giving a better show),
or that they were intended to be used like the banderillas (lit. little flags) in bullfighting remaining in the victim and used to demonstrate the skill of the attacker
(the link above suggests the Ephasus museum may refer to the weapon as a pig sticker)