Fairly simple: trans people will keep being born, attending school and progressing to work. They'll have sex, raise families, care for relatives and drive cars just like everyone else.
And hopefully, eventually, they'll stop being characterised as villains dedicated to Penelope Pitstopping women. It'll be recognised that lots of trans people are gay and bi, and that dating while trans is an individual, private thing rather than a crime.
Parents who don't reject or try to forcibly convert their trans kids won't be called 'child abusers' because, apart from anything else, that trivialises actual abuse.
Maybe some people will finally get that parents don't want to 'trans' their kids. That apart from this being a ridiculous fiction, parents know exam failure and extreme violence (most of it sexual) are what trans kids can expect. Loving, respecting and supporting a trans child is very different to wanting them to be trans.
it'll be recognised that trans people have always existed, and that transition exposes them to enormous risk. Trans men and women are treated with extreme hostility by violent cis men. They have a very high risk of being raped.
Hopefully, trans children within schools will be left alone. They won't be told that it's okay for them to be touched, hit, or sexually assaulted because "it doesn't count". They'll be able to go on school buses and enter classrooms without children attacking them. And because the extreme violence will have died down, they'll be able to take their exams, not be permanently.doped.up on anti-social meds and actually enjoy their childhoods.
Perhaps grown adults will stop commenting on their appearance, and recognise that the very small number of trans kids who get care are better off being treated by doctors than dying young. That surgery for.under-18s is banned in most places, and gender-affirming care has a very low regret rate.
Personally, I hope for a world where misgendering is recognised as petty bullying and inclusive language as life-saving. Where it's understood that safeguarding is already a thing, women don't have any 'safe spaces' (just the occasional lockable cubicle) and that no one would be trans unless it meant everything to them.
And that trans people aren't an issue or an ideology, just normal humans. They don't transition for sexual reasons, because sex and gender are different things.