I would LOVE to have more interactions while in labor, and giving birth. I've always hated how the baby just appears.
PREGNANCY & LABOR:
Interactions that you can use while in labor, such as pain relief (drugs, movement, shower). Include buffs such as -back labor, -nausea, -nerves, +pain relief, +excitement, -fear, etc.
Prenatal pills that you can take while pregnant.
Rabbit hole birthing classes.
Birth animations so that you can choose how and where your baby is born. Perhaps the baby can be pulled from a blanket draped over the sims lap at both home or the hospital. If the baby is born in the hospital you can also have a C-section option and give birth by the creepy machine. For home births you can have the option to birth in a birth pool, on the couch or in bed. Buffs included with each option afterwards.
Post partum buffs would also be pretty cool. Maybe like soreness, -post partum depression and -bleeding, -sore breasts/nipples, -cramping, just to kind of show that it's not all "new baby" excitement.
I've been pondering this for awhile, and it may be a little out there but I love this idea for a mod and I HOPE HOPE HOPE that you take it into consideration, or maybe even add a few of these ideas to SOL?