The solution to this would involve re-drawing the maps in a vector graphics format, which technically allows 'infinite' levels of zooming to be used pretty easily. But creating those vector graphics assets would be a lot of work for anything more than a basic sketch of the map/hex outlines and the information layers.
There are open source tools for generating vector images from bitmaps, but they're not perfect in terms of quality. I assume it would require a large re-write of the website code to implement too.
The solution to this would involve re-drawing the maps in a vector graphics format, which technically allows 'infinite' levels of zooming to be used pretty easily. But creating those vector graphics assets would be a lot of work for anything more than a basic sketch of the map/hex outlines and the information layers.
There are open source tools for generating vector images from bitmaps, but they're not perfect in terms of quality. I assume it would require a large re-write of the website code to implement too.