Actually, seeing the diagonal stripes in the examples [1], maybe it'd be useful to have a mode that lets you rescale the axes to line the stripes up? If you're using this to inspect patterns, it seems to me that the most useful time scale would not be a nice round human number, it'd be one that matches well with the patterns you're trying to inspect - one period, not one second.

Way out in the distance, maybe even a variable-interval mode, where you can click-select blocks and each one is given its own column, so you can directly compare them without the dead space in the middle and starting from the same baseline?

[1] Particularly striking: https://cdn-images-1.medium.com/max/2000/1*EypUnkPtayeKr9bJu...

You could autoscale the y axis to whatever makes the columns have the most similarity (minimize squared differences).

Rather than lsq, you could use autocorrelation within rows to line them up.

This thing is extremely periodic. You should do an FFT, there should be a peak that's more obvious than the others. That's your frequency and thus your period.