Honestly, it just really seems like wishful thinking on your guys' part... I just wouldn't get my hopes up or expect it.
Here is a brief history lesson (only because I'm reeeallly bored & can't sleep)...
Typically, Halloween would be the final night. It didn't matter what day it fell on, even if it happened to be a Monday (2005, 2011) or a Tuesday (2006), Halloween was the final night (Even Hollywood ended on Tuesday in 2006 & it was only a 7-night event that year).
However, extending past Oct 31st into the first 1-3 days of November is not a new concept for Orlando (or Hollywood in 2008). This extension was never done as a test to see if people would still go after Halloween, it was about $$$$$ because they already knew people would show up. You have to remember, before Pottergeddon in 2010, HHN is what helped Orlando get out of the negative that IOA put them in (yay alcohol sales), which is one of the reasons why HHN was in IOA during 2002-2005.
1996 & 1997 were the earliest years to have November dates in Orlando.
It wasn't until 2001 that including November was a normal thing. More Thursdays and eventually Wednesdays were added (something Hollywood seriously needs to consider), so from a business standpoint, it only made sense to extend the event into the first 1-3 days of November due to the placement of Halloween.
2012 was the first time in years that the event didn't extend past Oct 31st (wednesday). This pissed off long time fans of the event. We were all in shock that it didn't go until Nov 3rd. It made no sense considering the crowds were still huge the final night. I distinctly remember being in the Kidzone Stay&Scream (to get a decent head start before the gates let in the masses) the final night that year (usually the least crowded night), we just got done going through House of Horrors (can't remember if we got a 2nd time in or not) & the line was already 40+mins after the park gates had barely even been open for 15mins. This never happened. Ever. Crowds were awful that year.
Anyway.... My main point is, lets keep in mind the biggest important factor that you all seem to be forgetting,
the FFP are extremely limited in quantity. It would make no logical (or business) sense to extend the event another 2 nights (Friday/Saturday), just for a small amount of people to attend a week after the event ended. Especially when those people are not spending any extra money to get in (except for those that have to park) & they are also less likely to spend money while there (Most of us eat before/after rather than waste valuable event time for overpriced food). So unless they plan to sell tickets for those two extra nights for the general public to go (remember, its only the FB/Twitter fans that have a FFP), it would be completely illogical to assume they will extend the event to Nov 7th. Especially when they can let those FFP holders attend an existing Fri/Sat event night.
Lets also take into consideration that they need to get the park ready for Pottergeddon next year. Catering to a small group of HHN fans is not on their priority list when they have construction on the upper lot (and soon lower lot with the former NBC Experience) & Grinchmas in December. They're going to want all HHN stuff "purged" from the park/backlot as soon as possible.
