On point 1. Not the league that hates it, well they do, but because the networks hate it. Two weeks leads to a diluted schedule and less games going on.
On point 2. I imagine something similar with dilution. Everybody would be OK with it, if the pay can be worked out. Owners will say same portion of revenue sharing which means players would get paid less (x Dollars spread of 65 guys instead of 53) and the NFLPA won't like that. Owners won't agree to up the revenue sharing pay.
On point 3, won't happen. Nobody wants to see Tom Brady on the field less because of snap counts. Let the stars play.
On Point 4 and 6-- players hate any change to equipment and its fought tooth and nail.
On Point 5: Thursday games aren't' going anywhere and bye weeks before creates a scheduling mess or teams with a bye in week 2.