I would love the developer console. For those like Deadknight who would be afraid of the temptation to use it, you can make it so it's disabled by default, but can be enabled by editing the start up commands. If you have to go out of your way to save the game, quit the game and look up how to enable and use it online, it shouldn't be as much of a temptation.
For those of us who wish to enhance the replayability of the main campaign by using or using it to test our own campaigns we create in the editor, it is a necessity.