At this point it seems fairly obvious that Google isn't planning for Google Docs to compete with Excel on features. Rather, they've figured out some ratio of power users to non-power-users (like the oft-repeated claim that 80% of the users only use 20% of the features but in Excel's case I suspect the ratio is even higher) and they've decided to implement only the basic features used by non-power-users.

I'm not sure why Google bothers to have a 'share an idea' forum when they have no intention of implementing the 80% features. It's bound to be a magnet for complaints when feature requests get ignored.