There is one option missing from the poll that is significant, and that is the continued strength of PS360. Their late-gen software support is unprecidented. There is little motivation for these owners to buy a new system with so many big games coming out for what they already have, or for owners to choose a more expensive new system taht is only playing the same games.
This goes hand in hand with Wii U needing games, which is the option I chose. It needs games, groundbreaking games, exclusive games. Almost everything on the system is multiplat, and was all late ports on top of that. MarioBros, NL and Zombie U just aren't enough to coax the core gamers and the mainstream are happy with a PSWii60 as long as it has some games and is cheaper.
A price cut will help, marketing is needed. But WiiU needs a couple core titles that wow people and make them want the system. This will spread word of mouth. And it also needs PS360 to die and be replaced by more expensive systems with fewer games.