I like the ending for several reasons. First its totally open to interpretation as so many here are doing. Second the ending suggests that in light of the death, the fear, the evil people that so many of the characters are that life just goes on. Many people wanted the show to end with Tony getting whacked and them getting closure, but the reality for Tony living his life is much harder than just getting killed. There were hints throughout the show that in small ways resolved each characters situation and the overall irony of the fact that the family could go from living in hiding with the fear of death one day to right back to their normal lives the next. Tony gets the sit down with the New York family minus Phil and rather than being pissed that they killed Bobby, negotiates a settlement for Janice his sister. He would be more annoyed listening to Janice whine about what she's going to do than he is about Bobby actually getting killed. AJ goes from attempting suicide and fearing the decay of civilization, to being an enviromentalist not caring about his SUV burning up and deciding to take the bus, to not minding driving the BMW because "hey, it gets 23 miles a gallon, and thats not bad". Tony takes care of him by getting him set up with Carmine to help with producing a movie to a promise of eventually getting his own nightclub to run. It's like AJ went through his discovery phase of life and is ready to settle into his niche in life prospering from his fathers activities. Meadow wants to become a lawyer and part of the reasoning she gives Tony is because she's tired of the government picking on minorities. I mean after all she has seen how poorly they treat Italian Americans based on all the warrents they have executed to search her own (Tony's) house. Can you say Mob Lawyer! Carmen is in total fear when asked to run by Tony, but the very day the "war" ends she has an appointment with her builder to start working on her next house she is going to flip. The whole theme of the show from the outset was life goes on.
Even Paulie sitting in front of the Pigstand working on his tan suggests that through all the changes, the death, the deciet, and the crime, life goes on. I did like the idea of the cat being the reincarnation of Adrian and thought it was interesting that it only bothered Paulie. Seems he is the only one with any smidgeon of a consious about the things they do.
Finally, the killing of Phil was in my way of thinking a goodbye to the old Mob mentality. He was old school, mad because Tony has never done any real prison time, mad because made men are not made to spill blood at their ceremony. Ready to declare war at the drop of a hat. While the New York guys Tony met with would not give up Phils location they understood why Tony felt the need to kill him. They even admitted he had crossed the line.
His death just signalled the end of the old Mob, and the start of the new Mob that has to exsist in todays world, and deal with the same problems of family and everyday life that the rest of us have to deal with.
In my ending Tony does'nt get killed, he has a much worse fate, he has to go on living his life.
Also as a last thought, I thought the whole scene at the end of Meadow having trouble parking the car was a nod from Chase to all the people who wrote and pursued spoilers about the final episode. After all the ruckos over the spoilers for the last episode of Lost it was his way of setting us up to think Meadow was going to killed like the spoilers said but she wasn't. There was anticipation as she tried again and again to park but couldn't, and then as she ran across the rod was she going to get run over? Chase threw that in the face of all those who thought they knew the ending.