That's why god gave you the ability to send PMs to Admin-- even with free accounts. I've seen them remove assistants and mods promptly after inappropriate deletions. Your wish for an absolutely neutral mod will never come true though because for a mod to want to be a mod, he's going to have to have some interest in the stock-- pro or con. I mod boards of stocks I like and stocks I hate. Most mods can be an adult and know what the rules are.
I do say the new appeal process is a beautiful thing. It has allowed a few issues to be promptly addressed.
Maybe a script could be written to PM a person if their post was deleted. It would serve several purposes. It'd notify them of the appeals process, and it could also serve as a warning so people know they're posts were deleted for alleged TOUs.