Add a keyboard modifier so that rolling the mouse wheel in the display area (not axes) zooms in both X and Y. By default (design,) strips have linked Y but not X.
Clarification: As it stands, we already have the behaviour described above. The issue is that in a strip display, middle mouse only zooms the X-axis of the strip you are in, and leaves the others unchanged (Y aqxes are of course changed in tandem). Presumably the keyboard modifier should temporarily link the X axes as well.
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Clarification: As it stands, we already have the behaviour described above. The issue is that in a strip display, middle mouse only zooms the X-axis of the strip you are in, and leaves the others unchanged (Y aqxes are of course changed in tandem). Presumably the keyboard modifier should temporarily link the X axes as well.