Hi,
I haven't used DIPTrace yet, although I've decided to download it after seeing Dave's first look video. I've only had my hands on the first PC based schematic planners and autorouters in the late '80s.
What occurred to me back then was that when creating component symbols, no matter where the origin was, the pads should be drawn on the intended snap grid to ensure ease of connecting wires when creating the schematic layout.
Sorry if this is a dumb suggestion which doesn't need saying.