How is this saucy? This is just reality. Especially if she's overheating the mech.
I mean it is, slightly saucy. If nothing else she'd probably be wearing some kind of utilitarian underwear to avoid chafing and such, and maybe a cooling vest. It is true however that you wouldn't wear much more than you absolutely need in a battlemech however-especially some of the bigger heatboxes like an Awesome or a Black Knight.