Mouse Toddlermouse is gorgeous! And as badders and everyone else has said, parenting has very little effect: you may think you know how to parent until number 2 comes along and you realise it is down to their own personalities. As for potty training, ds2 was refusing to potty train until he was three and a bit and then was done within a week, whereas I started with ds1 too early (about 2.5) when he wasn't interested and it took bloody ages and he was still regularly having accidents in the day when he was 4...
And of course the ice-cream parlour with be stocked with Maud's, as you wish.
As for Adrian leaving, well they've been keeping that underwraps for ages then given they are filming later this month. Almost certainly due to US funding and US team-writing model I would have thought.