I personally would take a direct bus instead of taking two trains, even if it takes a bit longer. In fact, even if it was two buses, I'd probably still take the bus
I find changing trains so stressful, the platforms are never where you expect and the signage is always terrible.
If I can just get on a bus, and get off where I need to be, that's worth the extra time, and I can imagine it'd probably be the same for people with kids
RE: New service X11