I don't think I'd mind it, but generally happy to see buffs to or rewrites of models that need attention rather than nerfs.
From a business perspective, it wouldn't be an expensive exercise as the sculpting and tooling costs from other waves would be gone.
The book could easily be padded out with some new faction upgrades for enforcers and henchmen similar to the current waves and new strats and schemes.
Marlena's teddy is smaller than the full size. Miss Ery vaguely resembles marlena's version, though only a bit. The Stolen or candy combined with Miss Ery would get the idea across, but im not sure if it would fit on the base properly. Maybe Puppet Wars Teddy and Candy or Stolen? Unfortunately children with toys is not a big part of the wargaming market.
The most interesting thing about this pursuit for me is that it likely means the Heavy Guns are going to be expanded. It is likely this pursuit will start with one, but the ones from the core book are rather expensive so I would not be surprise if some lower end stuff will be included in the book.