Still upset that Chase never completed the Russian story in Pine Barrens.
Yeah, it seems like a lot of things were either ignored or went too fast. I agree with the above that Richie, Jackie Jr. and even Ralph should have been around longer. I also think that Junior got relegated to the background too fast.
I almost think the show might have been better had Tony stayed as Underboss/Capo and not almost immediately have been the power behind the scenes.