Sims 4: Please add more life stages

I wish we had 3 micro stages for each current life stage so they could be filled with changes that leads to the next big life stage, exactly how happens in real life.

Like, imagine the first kids stage having them being more immature like babies, the second one having them being like they already are and the third one introducing puberty (acne, body hair, etc.), leading directly to teenage years. I think the only life stages that wouldn't fit those are the newborn and infants since they already seem like micro stages.