I think this idea could really take off and would get great feedback from the community. Its not a game changer but just a really nice feature that other 3D software does not yet have so it would be a Blender first.
Magnifying glass. Similar to windows accessibility magnifier, Blender should have a hotkey that whilst you’re holding down that key on the keyboard (or mouse if you assign it) a nicely rendered round magnifying glass appears under the cursor, think of it as windows magnifier but on steroids and not annoying… Maybe it could be a nice pre-rendered magnifying glass, maybe it could utilize eevee or have real time refraction around the edges of the lenses, and maybe it can use a better computation method than windows magnifier (which is already pretty good i’m not sure what kind of interpolation or magnifying method it uses)… Heck maybe the Blender magnifier could even use AI upscaling, since its a very small screen area it might manage it in realtime.
The problem its solving. When you want to see an area of your 3D model really close up but don’t want to have to put your nose to the monitor. Or when you want to see close up how a real time rendered material is looking when you are in cycles preview viewports, or just in general if you have bad eyesight and interface scaling is not enough and you don’t like the clunkiness and bad design of windows magnifier. It would also bypass the need to zoom in and out when in camera view, losing your settings.