Makes sense with an "athlete" kind of theme, potentially.
But I imagine that RRG have a more developed theme in mind than just "greek stuff". Like, they previewed for us that they have a "luck manipulation" kind of theme to their rules in some way. To me, this is suggestive of some sort of Oracle of Delphi idea. Blessings of the Gods with visions of the future.
Which in turn to me suggests to me more of a religious direction, rituals and prayers. Something with a Morituri-like feel, but focused on fortune rather than death.
But of course, every gladiator will be individual with their own distinct character. So there are lots of options. And athletics was a ritual thing in the olden days as I recall, so it makes sense.
I could imagine maybe for a 40mm based gladiator, a "Hephastos the Armourer" kind of model, heavily armoured and with a big hammer.