Trends in sex crime legislation the enemy might be planning

It's likely that laws prohibiting age difference sex are going to be written in terms of if you're older than a certain age it's illegal to have sex with someone younger than a particular age instead of an age of consent that it's illegal to have sex with someone who's under that age. There's likely to be a trend towards the law specifying restrictions on when a person perceived as advantaged is eligible to receive consent for sex from the person perceived as disadvantaged, rather than if a person can legally give consent to someone for sex.