However, there are two things I'm not liking so much:
1) When she's on my back, it feels like she's having more difficulty seeing things around us. In an Ergo it was easy for her to lean over to one side and see around me. In the KP, when she's straining to see something, I often had to turn sideways for her to be able to see.
2) Because of the height and where the straps are located, it's harder for her to reach things. I often give her snacks while we walk, and today attempting to hand her slices of nectarine and have her navigate them into her mouth was so much harder than feeding her on my back in the Ergo.
Is there another comfortable toddler carrier that might be a better match for us? I had heard that Tulas were also super-comfortable, but I just looked at photos and they look even higher. I'm primarily interested in soft-structured carriers for back carries.
Do you have a picture of her in the tod KP? KPs have a deep seat, and should come up high enough to support her. Compared to a very short ergo, it will feel like she has less freedom, but she is better supported.
Some kids are arms in kids, and some are arms out kids. There are other manufacturers who will make a toddler width carrier, but shorter so an arms out kid will be able to have the additional arm freedom. However, most kids figure out how to be arms in or out depending on their mood even in a taller bodied carrier.
As for seeing around you, that shouldn't really be a goal. f you want her to see more, move the waist belt higher so she can see over your shoulder. The ergonomics of a leaning kid are rough.