Cherokee_Cruiser
Bronteroc
Unfortunately, there's not much of a choice when leasing -- you're going to pay a premium, and given the limited A320/A321 availability (both ceo and neo), I doubt GECAS is letting VX off the hook. In the past VX has been able to restructure leases and defer airplanes, but only because they've been through pseudo-bankruptcy -- negotiating privately with creditors to save the ship.
We don't know. Maybe someone cancelled or deferred an order. VX was suppose to get 320NEOs and was the launch customer for America, but once that was deferred someone else took it and will fill those shoes. 10 isn't a big number to find.
Given the mostly-TCON network VX has, I'm not surprised that the A321ceo hadn't really been kicked around to date -- at the proposed VX A321neo configuration (185 seats), the long TCONS (LAX/SFO - JFK/BOS, etc.) would likely require weight restrictions, which defeats the purpose of the extra seats in the first place. The beauty of the A321 is it costs ~15% more to operate than the A320, but offers up to ~20% more seats -- but at the expense of range. The A321neo should now have the legs to do TCON and West Coast-Hawaii.
What is this being based on? 321NEOs most likely will not be weight restricted. You are making comments and assumptions for a plane that hasn't even flown yet at any airline.