Some possibly controversial thoughts about a dancer addition

[Singularity]

Or. OR. You can just have all genders use the same dance animations. To stress the point, if you already acknowledge there's a set of movements that you'd accept for male charas, why not just have that be the unisex movement set instead of insist on what you imagine as a more feminine movement set? Boom, one movement set for everyone without even getting people complaining the male Roes know how to spin around themselves.

Your own example of the Sundrop dance answers that. It's based on a traditionally masculine dance, so of course it looks more natural performed by male characters.
Sure you can program both genders to animate the same way, but if you intend them to look dignified and elegant, you probably shouldn't.