Yeah, my concern has never been that he'll make Todd not gay. Of the many things that happen to gay characters that need to not happen to Todd, that is not even on the radar.
As for the gender ratio... Liberty Belle is the only female character who's actually had a worthwhile story or any kind of meaningful development (even Peej, who's gotten some facetime, has just been rehashing old angst), so even if the women in Sturges' book end up completely flat, we can at least feel satisfied that that's any real change for the franchise.