As for the RSNs, Comcast would have the same problem Disney did. Comcast owns several sports networks and RSNs so they most likely would be blocked.Question, could Disney work out a deal with Comcast to sell them the RSNs for a certain price which could also include possibly gaining back the rights to use MARVEL in Disney parks? Disney would be smart to let Comcast still use the comic book version of their Marvel characters (why not have your competition sell and promote something you own) and bring the MCU versions to Disney parks (including Orlando)?
Also, they could gain full rights to Hulk which Universal still has (which is why there hasn't been another solo Hulk film since 2008 which Universal released with Marvel Studios).