Preview blend mode by hovering over selection in property inspector
When selecting image appearance mode - (i.e Normal, Darken, Multiply e.c.t) have the image update when hovering over the menu like in photoshop.
Rather than having no preview and having to blindly select before viewing how it would look. then undoing over and over
Theo shared this idea
I’ll leave this open for now (and edit it to reflect the issue with blend modes), but you can cycle through blend modes with Alt+Shift+plus and Alt+Shift+minus while the object is selected. Hope that helps!