Warn when deploying objects without profile settings
I build a VF page, test it, deploy it and discover much later that I forgot to add profiles other than system admin to the page. Users can't see the page and get a permissions denied error.
So, the suggestion is to have a an optional analyzers that warns when deploying a new VF page to a target org where the only permission is System Admin. While this could be legit in some use cases, in most use cases, this is a self-inflicted omission.
This is a great suggestion Eric, I'm going to make a few edits to the suggestion just to make this one really concrete and allow others to vote on it. If you have any suggestions for other common mistakes then absolutely suggest them as that is exactly the kind of thing we want the problem analyzers to help with.