Are they also looking to set preferences for chest, cup, waist, inseam, shoe, sleeve, and hat sizes?

I'd assume only waist from these options is a preference stated as often as height, usually not by the same group of people

Allowing men to set a BMI or weight preference would be business-wise far more sound decision. Their userbase is anyway men dominated and they are pretty much the entire revenue source.

But that imbalance means they have to cater to women to get them to sign up, or men won't have a reason to pay for the service. And if you start asking for weight or BMI, there goes most of your already-too-small female membership.

All these numbers and metrics won’t help anyone, it’s superficial. Just like picking a guy if they drive a truck or are bald, that doesn’t mean they are a better person.