Which lifestage do you want to be improved the most? (April Community Survey)

@PlayerSinger2010 I've been thinking about how their movement skill could work. At level 1, they can just hold their heads up; at level 2, they can roll over; at level 3, they can sit up by themselves; at level 4, they can crawl; and at level five, they can stand up while holding onto something, and older Sims can help them walk (using a similar animation to the "teach to walk" interaction from the older games), but they still can't walk by themselves yet.