Yes designer babies are totally going to be a thing. The ethical discussion we had about this in college boiled down to it being ethical if and only if an individual could choose to undo and redo the changes as they desire.

I've run into that argument from the deaf community. It's a tough one, should a community of people have more of a say over what health outcomes are chosen than the parents of said child?

Ultimately technology should make whatever one wills be (short of causing suffering to other minds). Anything less than this is insufficient or otherwise broken technology. Theoretically if we had sufficient technology one could take any form whatsoever they desire at any moment with any senses they desire and so on. Now it's a quite far fetched concept short of us gaining the ability to digitize our minds or otherwise inhabit simulated realities. To achieve this in physical reality would be quite difficult.

The issue you're really getting at is the unequal spread of technology and our current technological limitations. Minds should be maximally free to experience whatever they desire short of causing other minds suffering.