Soooo, Delta's new contract includes a provision for testing out Virtual Basing. The link below takes you to their MEC TA roadshow video from a couple months back. Discussion of specifics begins at 1:04:40 and lasts about five minutes:

https://www.youtube.com/watch?v=fvXzXuVZbeg

Some highlights:
A one year test which can be terminated by either party at any time, and only extended with consent from both sides.
Participation by any pilot would be on a strictly voluntary basis, and would be open to pilots on the VB equipment system wide (vice from any one base).
If enough volunteers come forward to make a particular VB workable, the VB flying is 'pulled' from the respective bases of the pilots who will be staffing the VB. This is possible because the 'volunteer' process happens before the monthly bid process, allowing the company to build the appropriate amount of flying for the planned manning at the VB. VB would include 'normal' reserve coverage and rules as well.
Volunteers who live >125 miles from the VB get PS travel to work and airport hotel rooms (nearly the same as TDY here). Free parking at the VB.
As VB would make pairings more efficient for DAL (thus requiring less manpower), DAL ponied up more pilot vacation time in exchange.

I don't really care to engage in a pointed debate over the merits of the VB test at DAL, or VB in general. As some folks here may recall from last spring, I'm already familiar with the subject. I expect that if the perception develops that good flying is being 'pulled' for the VB, whether true or not, the test will fail. There were some colorful debates on the DAL forums about this subject prior to the TA vote. But the TA passed, and now it is coming to a competitor near you (along with their pay raise it appears).

If it works well for DAL, it is a safe bet the UAL's new senior management team will revisit the subject with us down the road.