Wish: add a zoom option for the loaded sprite sheet + option to save zoom setting or/and an option to ' lock'  zoom setting within the current session.

Why:

Zoom function:
I work often with sprite sheets containing rather small low-res sprites. My native screen resolution is 3440x1400.
When I load for example a sprite sheet with 1 line and 3 columns, and each sprite having a dimension of 14x5,
the sprite sheet is obviously shown really small.
Therefor a zoom option would be handy where you can zoom in with rounded steps (100%, 200%, 300%, 400%, etc)  on the loaded sprite sheet.

Save and/or lock the zoom setting function:
Adding a way to save a changed zoom setting would be very handy. This way after reloading the slicer program it will use the save zoom setting.
Or otherwise a way to 'lock' the zoom setting, so you would not have to set it again each time when you load another sprite sheet, but only within the current program session. After restarting the program the locked zoom is set back to normal/default.
Or better: add both save and lock :)