Psh... I dunno. Probably? Like, I wouldn't have to shave tomorrow morning and that would be cool. I wouldn't have to spend a lot of time and money transitioning, and I could do all the cool genetic girl stuff I'll never get to do, like have children. My odds of being murdered or discriminated against in housing and employment would go down, not to cis-guy levels, but down from where they are. That would all be nice, and desirable.
On the other hand, I like being trans. Discovering who I am, looking into queer politics and history, has created an empowering sense of awe and respect for what that means. Yes, as a cis woman I could be an advocate for trans people, but I wouldn't be trans anymore. I couldn't speak with the authority of that status, couldn't stand in complete solidarity with people who were like me before this magical change. I would feel like I selfishly abandoned this community.
Now, if the tide rose all boats... If this magical transformation hit everyone forever and for always, that might be better. Still, I'm not sure if it's ideal. Being trans offers a unique perspective, and it's an important component in the fight against institutionalized societal oppression. It challenges the gender binary in an important way, and could be a key element in realizing a new societal outlook on gender, sexuality, and non-conformity. If our part of the movement against these toxic norms was removed or lessened, how would it weaken the fight? How many would suffer if trans wasn't there as an alternative to the standard narrative? I dunno, I just don't. It doesn't seem right to have a magical escape hatch to privilege for one, or some. It seems better to tear down the privilege altogether.
If faced with the choice, I think my selfish desires would win out against my politics in the end, but part of me hopes not...
But then again, I'm probably WAY overthinking a fun hypothetical... sorry 'bout that