Stacked linked plots / borderless plots

[sairus7]

For vertical plots, linked by x-axis, we can hide ticks and labels for one of the axes. But there stil remains an empty space between two plots:

So how about making linked plots stacked together with no borders between them:

Maybe they can be configured to have no border from their adjacent sides. So we can have borderless plot widgets (configure borders visibility for each of four sides).
With borders | Borderless:

[sairus7]

Also, notice second plot y-scale is smaller because of less vertical space with visible vs hidden axes for the same widget height.
So, in some extreme case, we could move x-axes itself on a third plot widget and hide all but the x-axis.

[sairus7]

Or maybe it can be just vertically stacked multiple y-axis for a single plot widget. Something like this, but shown stacked vertically instead of in parallel: #168 (comment)