I havent tried one myself but there are stand to pee tools for anyone with a vagina. Bear in mind that... They're far from perfect and the way peeing with a vagina works makes it awkward and hard to use from what I've heard.

But no there is no way to preserve an "aimable urethra" while also getting vaginoplasty. Not unless you were still okay with having a penis, in which case there are surgical techniques that create a vaginal cavity but preserve the penis.

Maybe it would be easier to just carry a urination device with you? Otherwise you would need to look into something like penile preservation vaginoplasty.

Altersex/salmacian options are a thing. Options like PPV (penile preserving vaginoplasty) should work. m/altersex only has a few posts, so r/salmacian might be a better place to look if you are interested.

You might have to learn to sit on the toilet more often, or squat.

@agnosticians. I second the suggestion tolook at PPV. And I am wondering what you're imagining?