Considering the characters that existed in Quake 2 and Quake 3, this doesn't sound "radical" to me by any means. I think the knee jerk reaction regarding gender equality, feminism, and SJW isn't completely just here. I mean, we've had characters like Athena, Crash, and a ton more. So, in the DOOM universe the idea of a female Slayer may sound "ridiculous" to some, but I could certainly see it make sense. It just all depends on how it pans out. I think it's important to wait and see before blowing a gasket.
Plus, with Hugo being a Father, I could understand him playing with the idea. Especially when his daughter plays quite a few games. She might've just made a comment regarding it and he was like, "Hmm, maybe..."
I dunno, maybe it's because I'm older? But I can see situations that come off as pandering to whatever is hot in society or the media. But I can also see situations that just don't seem that way, and for whatever reason this "potential" possibility doesn't whatsoever.
Hell, I think it'd be pretty cool to see Crash return in some form. Especially since she was the only other DOOM looking marine (that wasn't just reskinned) that we've seen.
Edit: Just wanted to add with the fan service we've seen in both DOOM games, I wouldn't be surprised if we saw what I mentioned above. Especially with how the lore has been panning out. It'd just merge the DOOM and Quake universes even more so.