This is what I think will be in SP2

• many things will be updated to use Juno : new origins code like the graphics and (for a lack of a better term) hanger bay
• size will no longer be a problem
• fuselage will be able to have custom camo or decals
• More engines will be in the game
• more islands will be added
• seeing underwater will be in the base game
• game will get a new name after awhile like JNO(formerly SR2)

Most of these are based off the features that JNO has