Pretty simple request. Tactical battles should allow you to edge scroll just like the strategic view. Use case- if I'm casing an area effect spell and can't see my target, I can't left-click to move the view or it will trigger the spell. I'm forced to zoom out instead.
I'd also still like to see spell casting use right-click instead of left-click, just like all other actions. It's very strange to use left-click for anything other than unit selection or moving the viewing area.