Why is there no "new flight deck option" for the A320 series?

[Alpine Flyer]

Originally Posted by Less Hair

The current cockpits are meant to be similar to each other. There is no major change to be expected. Look at the A350 and you get the idea.

I do know that and wasn‘t asking for a total redesign. I‘m just wondering why even gradual improvements that won‘t exceed the differences allowed for variants or CCQ are absent from the 320 series. The whole A350 suite evidently wouldn’t fit but a variation of wider displays and some improvements like vertical situation display, etc. certainly would.

Thanks for all the opinions.