All right, let's see if I can get a nice QGIS workflow set up for building a slippy web map based on an irresponsibly-large image, with annotations on other layers for things like towns and roads and rail and rivers.

Vector tiles or image tiles?

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All two of you voted for vector tiles, but I'm authoring the original map with raster, for now.

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Now I'm doubting the wisdom of making this map in Web Mercator, because for a map that spans roughly Alaska to Florida, there's a lot of distortion of Alaska and its panhandle.
A rotated Lambert Conformal Conic map would make more sense for this North America map.

But really, I'm doubting the wisdom of making this use any real latlong instead of just slicing the image into tiles.

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Non-Web-Mercator projections continue to be an exercise in frustration.

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Like, I have the map image, distorted to EPSG:102009, the North American Lambert Conformal Conic projection. And I have a script that should be breaking that image into tiles. But either the tiles or the map are borked, and I'm leaning towards it being the tiles.

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