Had a external frame backpack when I first started out (made it myself). Have tried several internal frame packs, but none of them felt quite as good as the "original". Kelty has had a framed pack like this on and off for years.
This layout is designed with the toddler in mind. It’s not that our little ones need larger holds but rather they need the holds to be closer together so they can reach the holds. Toddlers have plenty of hand strength but where they lack is upper body strength. Therefore, adding more medium sized jugs is the ticket to offer them a positive experience on your wall.