@Myself well, as far as what we're even possibly capable of right now, it's true that most people wouldn't really /need/ much, but thinking forward I would think more in the way of brain augmentation, more and faster processing, more reliable memory, and so on
but I mean, thinking big picture, we're never going to get far in space with the bodies we have
if we ever plan on being spacefaring we'll need to have stronger... basically everything
and less reliance on things like breathing
it's true that humans right now can't survive the intense acceleration forces of theoretical, conventional interstellar travel in a reasonable time frame
but I don't doubt we could at least eventually build bodies that can
plus, increasing longevity would be both beneficial now and necessary then
much easier to replace a broken part than to grow a new human, you know?
and we can build in redundancy, diagnostics, all those fun things we do with our machines now
we wouldn't even need to keep the same form factor, we could have extra limbs, or integrate into larger machines, I really think that's what we need to be working toward as a species
which means we need to get over all this inane squabbling and work together