Canon or not, there's a certain obligation to adhere to an aesthetic that's 'up to date,' per se. Like MWO, there's a reason we're getting to use 'LosTech' cooling suits, it keeps the pilot gender neutral without a complicated RPG-esque character creation system (MWO is all about giant stompy robit combat).
Yes, you can't get away with the sort of things we had in the '80's and '90's.
Everybody in the gaming business back then (Palladium, Games Workshop, Steve Jackson, White Wolf, TSR) had to put in some gratuitous cheesecake to stand out and draw attention in the hobby store. Some did this worse than others.
FASA (the original publisher of Battletech) was no exception.
[Mod note: added spoiler tag ]
Now this kind of thing doesn't fly so much these days. But, in my opinion, FASA did this 'gratuitous girlie smut' better than most. The female mechwarriors are tougher here, stronger here, and they aren't afraid to show them with scabs, scars, warpaint, and grime. The mechwarrior in the lower right looks more like Rocky Balboa than some contrived damsel. And at least there's a canon based rationale for it (however contrived).
Some may call this tasteless, and it probably was. But it was, in my opinion, less tasteless than what Palladium was doing with Rifts, going full John Norman. Or what GW was doing in Realms of Chaos at about the same time.