Sorry no offense I'm just confused by this comment. Do you mean because there's only one female RO? Because from what i see Greer is into both men and women, Magenta is only into women so if you arent into women you can go for jack thats only into men but then ashley is into women but would possibly be interested in a male MC. So either way 2 of them are already bisexual or atleast bi curious. With 2 being gay/lesbian. There would only be 1 RO to romance if you were exclusively interested in dating a female RO. I get tht. But making them all bisexual wouldn't do anything to fix that.
Maybe you meant make them all gender selectable? Where you can choose the gender of the ROs?
But if you only were interested in pursuing a female RO then you could still read this book...because there is a female RO... so...