With the 196s seemingly highly thought of after their first day in service, the promise of the 197s and the well-discussed issues with the 195s, do you think that any future Civity orders Northern place should be for 196s or 197s (or electric/hybrid/bi-mode equivalent); including an interior design more similar to the existing 196s and 197s, rather than ordering another batch of 195s to the existing Northern interior spec?
The most future-proofed option for replacing the 15x classes that are reaching their end of life (and that isn't all of them) would be to go for a diesel-electric bimode that can ideally work in multiple with one or more existing classes of northern train.
A bimode civity that compatible with both the 195 and 331 would be attractive, however I think it's important that the spec isn't written in such a way to limit it to a single manufacturer, as that would probably drive up prices.
Other options, such as flirts for northern, should also be considered.
And, all new train orders, incuding this theoretical one, should require full level boarding similar to the 231/745/755/756