About the new IMatch 2025 feature, Peek View:
Would it be possible to allow the option - via middle-click - to allow full-screen display of the image until the next middle-click? Also, is the new Peek View gonna allow the user to pan and zoom?
QuoteAlso, is the new Peek View gonna allow the user to pan and zoom?
No. It scales images to full-screen, not beyond. Images smaller than the screen can be optionally blown up to screen size, in which case the Peek View indicates this with an icon.
For all else, you already have the Quick View Panel and the Viewer.
Maybe add a feature request for a "lock" option for the Peek View after you have tried it.