Late to the party, but killer instinct is different from intensity. To me killer instinct is getting an opponent down by 20, then putting your foot on their throat and pushing that up to 30, then 40 etc.
There were too many games last season where the team would get up 20 in Q4, then lose focus and end up winning by somewhere between 8-12. That is NOT killer instinct, and just ___ on the part of the team (laziness, sloppiness, fatigue, any or all of the above... or something else).
What was the missing ingredient last season? Paige. IMHO she's the only one with a killer instinct. Again this is not to say the rest of the team doesn't play hard - we have an AWESOME team, kids who are tough as nails, and last year made a great run with so many missing pieces. But IMHO, Paige IMHO is the only stone cold killer on the team.