Corporate, it will buy you options by being in your resume. I am not advocating that this will make you rich or happy.
A big plus is understanding corporate culture, as it permeates everywhere with it's long reaching tentacles.
I am not saying this is your future, just an extra "certificate" of sorts. Plus corporate is like a club, once you join it, moving to other corps is a lot easier. In my experience at least.
Reading this thread, I thought of a meet-up type of group where the purpose would be to lie to the person in front of you. If the person buys X amounts of lies then you get Y amount of points.
What does lying have to do with interviews?
Nothing at all, but to make a person believe you, you must utilize and have a full comprehension of the social dynamic that occurs in a interview.(IMO)
Like I said, I am just putting this out there. However one thing is certain you need humans for this, it can not be a program. Also lying and wondering if that person believes you would add the stress of uncertainty that inherently comes with interviews. A minimal simulator.
I do not think this will ever gain traction, as the community of people interested to participate would not be centrally located geographically.
An other alternative is to invest in an interview coach. I know old school but I think this is the route to go. If you can find a HR professional who does IT headhunting. Her wisdom is priceless. Search for HR firms and head hunters on linkedin or whatever they are called officially and you will get the angle from the insiders. Might be pricey but I would consider it an investment.
My experience with Google spreadsheets in a business environment setting is that it served to compensate what is missing in our logistics software.
It seems to be a go to tool for quick fixes, implemented without high level planning. Although I do not know for certain, it is apparent that most formulas and templates on google spreadsheets were created by low-mid employee initiatives.
In other words, employee Z is fed up of X feature lacking in our logistics software and would create a template to address this.
The problem is all the data is segregated and not assembled under one point of view. However, the google search function reduces this weakness significantly.
From my personal point of view, our organization loved it.
Organization profile: Large business,~500-1000 employees
To answer your question, yes it had become a data warehouse, only on niche data segments, that were not addressed in our main tool.