1. Would love to save large maps (I mean huge) to any drawing format directly to file at a W, H and Altitude setting that I choose. So far, the largest maps I can make are 32,000 X 32,000 pixels 32bpp and I'm sure I'm breaking some sort of law with the method I wrote.

2. Lock the scale for all drawn objects on the map. When I zoom in or out, I don't want the streets to spread out or compact based on my zoom level.