A way to improve the Cover Image Preview even more?

1.★ Maybe it would be even a better way to enlarge the Cover Image Preview in different zoom sizes by multiple double clicks for zooming it in different sizes or maybe with a middle click of the mouse button, or maybe it could be done by holding down the shift key with the left mouse button.
2.★ Also it would be better, if the zoomed Cover Image Preview could have arrows for the previous and for the next Cover Images just like it is in Cover Image Pane.