It’s already happening. Sisters doing microphone and sound.
The big change was in the OD book only baptised brother or sister can do these things. They thought this would get more to get baptised but it didn’t work.
the order is first baptised brothers but if there are not enough then baptised sisters. If there are not enough baptised sisters then unbaptised brothers can but it’s rare that there are not enough baptised sisters.
Most young ones brought up by parents in the congregation just don’t want to get baptised when they understand what there have to lose if they don’t follow the rules. Once hormones kick in they certainly don’t want to get baptised