I guess everyone needs to understand the keyboard options are going to be limited to whatever can fit between the holes in the chassis; things like adding extra keys to the right of enter or things like an ortholinear layout probably won’t be possible.
That being said, there’s still options! I for one would love to see T-shaped arrow keys in the future, maybe with the top half of the left and right arrow keys substituted with hard rubber or something you can’t press, and so on.