Two wins is an absolute minimum for Wales. Three wins should be the realistic target.
Another opportunity to beat Aus, and we had better take it this time. We might be without one or two French based players (not sure about English based players either tbh, PRL usually kick up a fuss), but we should still put out a team capable of winning. I'd expect us to beat Argentina, although their recent experience in the Rugby Championship will mean they will be stronger than the last time we played them.
I think we'll see our strongest side put out against Argentina, something like: Jenkins, Owens, A-Jones, Evans, A-W-Jones, Lydiate, Warburton, R-Jones, Phillips, Hook/Priestland, North, Roberts, Davies, Cuthbert, Halfpenny. Jones over Faletau, I simply can't leave Jones out. Not sure who to pick at 10, probably Hook, but wouldn't be surprised if the management stick with Priestland for the first game.
Against Samoa I can see a few changes being made, something like: James, Rees, A-Jones, Charteris, A-W-Jones, Lydiate, Tipuric, Faletau, Ll-Williams, Hook/Priestland, North, Beck, Roberts/Davies, Halfpenny, L-Williams. I would like to see another tightead prop tested, but it looks like Mitchell will miss the AI's, and I'm not sure anyone else is ready yet (Rhodri Jones is a looshead now, Lee and Rees aren't ready). I wouldn't be surprised to see Warburton play all four games, but Tipuric deserves a chance. There could be an option of playing both, the Blues have shown that there is merit to this. I want to see Beck given another shot at 12, it could be worth seeing how Roberts goes at 13 outside him (still not totally convinced with Davies, despite being a very good player, he can be selfish and a little erratic at times). I want to see more of Liam Williams for Wales, but Halfpenny needs to be playing for his kicking, so Halfpenny would switch to wing for me.
Pick the best performers from those two to play NZ. See who isn't available against Aus (Jenkins, Hook, Phillips all possibly absent). This is the game where picking both Warburton and Tipuric could be a good idea. Beat Aus at the breakdown and you take away from them their biggest threat, quick ball. But who do you leave out of the backrow, Lydiate, R-Jones or Faletau? I'm glad we've got Gatland back at the helm for these two games.