Points plus nights plus dollars? A New Trend?

I'm curious if others have thoughts on the UNITED announcement (that I received today) indicating that, for 2014, your status would be determined by:

• flight miles OR flight segments
• PLUS a minimum number of dollars spent.

Here are the details: Mileage Plus 2014 - Program Updates

Should we assume that Marriott is also considering a qualification regime based upon nights plus dollars spent?

I see the logic of it, but I expect plenty of customers will complain.

Thoughts, reactions, insights????