Hey there!
I've been doing a big project here that has many attachments to change at the same slot, during the timeline
but I have to say that, the most time consuming is to change the sprite to another attachment, as I have already a big project,
like mouth expression like we do on ToonBoom.
I really like the way that Spriter tool (2d animation software) makes the change of the sprites when hold right click over the image.
I was wondering if Spine could add something similar too.
so during the editor, we could press a hotkey/hold right-mouse click over the slot selected on screen.
to display a pop-up aside of the selected Slot,
with the images that are in that "slot" or "folder". I'm sure this will saved us a tons of time while fixing the attachment positions / size, and switching during the animations
Also.
This could work to replace an attachment sprite from the image folder, by displaying some small thumbnails from the folder.
as I also do a lot of Particles FX and change a lot sprites. i'm sure that this will be an awesome feature.
photo example attached here below. :grinteeth: