TL;DR
Quality of life request: Please add keybind to temporarily lock the blueprint position to its current coordinates before it is placed.What ?
2 closely related issuesWhen holding a blueprint and zooming in or out, the blueprint shifts position. That is, if you have grabbed a blueprint and you are getting ready to place it and the blue-green image is moveable with the cursor ... if you then zoom in/out, the blueprint will move in unpredictable directions, sometimes because the cursor changes position and sometimes because the mouse may shift slightly while using the mousewheel.
A related problem is that while holding a large blueprint, you can't zoom to the edge of the blueprint, only to the center of the blueprint. This is particularly challenging with large blueprints (like big factories, train stations) where the blueprint is larger than the viewable screen and this makes aligning the edges difficult when you can't zoom into the edge of the blueprint.
My suggestion would be to add a function (preferably a keybind) to temporarily lock the blueprint to its current coordinates and prevent it from moving due to zooming or accidental mouse movements. It might also be helpful to change the movement keys to "nudge mode" while the blueprint is locked. The movement keys would move the blueprint one block at a time, but the player would not move in this mode. This would make it possible to zoom in on a large blueprint and make fine adjustments to the position. Pressing the blueprint lock button again would return to normal movement and blueprint mode.
(Sorry, I couldn't find any images that would help depict this issue.)
Why ?
I believe this would help players with large blueprints, but it should also help older players and people with accessibility/disability issues by making blueprint placement less dependent on fine motor controlThank you for considering this