I love the concept of the system editor, I do have a suggestion though. Why not have all the symbols from the schematic editor also available in the system editor? For the design I am currently working on I was able to get closer to the system diagram I needed using the schematic editor than the system editor because of the available symbols (relays, switches, sensors, resistors for resistive heaters, etc), the result is not ideal since the schematic editor is not intended for this purpose. The option to create custom symbols in the system editor would be another nice improvement.
