im willing to bet that the final battle/the end of the season will end rather tragically....and be very destructive...that whatever happens willnot exclude the gaang or FN...both will be affected in probably a devastating way...suc has someone sacrifices themselves for the greater good...or just some unexpected deaths that are so sudden and sad that teh breath catches in your throat i think its going to be not exactly a happy ending..but an end..things will turn out the way the gaang wants them too but at great cost....if aang donst die in the gaang..someone else will

i could see aang dead..katara crying and sokka and toph holding each other..Zuko standing up amidst the rubble looking around his father and Azula dead, he sits down as the weight of whats happened hits him, ...time passes ad katara produces the next avatar...(possibly) or sokka...they will be thrilled to have the avatar as a son b/c itll be like getting aang back but in an indirect way.....i dunno just a thought..(fates of Mai Ty Lee and Iroh are undetermined...iroh i say lives so he can help Zuko once he gains the throne and be his mentor once again.....Mai..dead or living...Ty lee possibly runs away before the finale decideing to have nothing more to do with Azula and the thingsin the FN..possibly runs into hding of sorts until war is over suince runnin away would be considered treachery shed be a criminal as long as Azula and ozai lived)