I 100% would support Wind in the Willows figures, and if they did a "build a car" that would be awesome - and as you note you just need those 4.
Kind of how a four figure wave of 1) Ichabod, 2) his horse, 3) The Headless Horseman, and 4) his horse may have limited fans but those fans would be all in, I think.
I liked the interview, I understand their frustration with the consumers not getting their thing with the mixed waves, but they have announced 3 waves since the last Robin Hood figure, and the lack of Little John kind of supports the concern people had that things weren't going to be completed - so it is not like four waves, four turtles - because I don't know where they will draw the line as core characters to fill out a film. I understand they can't commit to say a dozen RH figures (although I feel like that could work to be honest), but they are not instilling confidence that they will get to more from RH, which also does not instill confidence that they will for other things they started.
And, I'll just add that going to Nightmare Before Christmas stop-motion figures when you start a line based on the classic, hand-drawn animation made little sense to me. (Probably is their best seller, so what do I know).