Very hard to implement, but see-through knickers being available while regulation whites are not has some workable plot angles.
On a long-term projection basis, Goodhead's background won't bother too many, even if still carrying. The serving girls are a step up from Celebrity Love Archipelago, but no one will cry when the girls they don't know end up with Mykock. The pianist? Good add.
Chang/Zhou can already build an arcology or orbital station where the 24 grads (counting Zoe) can thrive. Since Tia has a name, be a shame to leave her or anyone else who gets one in this phase behind.