The whole point of using it is to connect AdWords spend and/or the maximum amount of data you can get out of google search. There's a definite cost to not tunin

The whole point of using it is to connect AdWords spend and/or the maximum amount of data you can get out of google search. There's a definite cost to not tuning these things as well as google possibly can. If you actually want to know about your own website, just about any competing tool is better.