I think this would be quite an overkill and a lot of work to really implement or create the tokens for it. I think the DungeonDraw - when it is working - is already very powerful and helpful. Of course DungeonReady for blueprints would be really a lot of fun ;) I think the simple possibility to paste a map as image into roll20 and then use DungeonDraw on top of it is ok for many use cases and the bigger problem is that it is really difficult to get the rooms and tokens to a prober scaling, as they seem to have a px based sizing instead of a grid bases sizing. Have you seen the error above (just because you haven't responded to it yet)