Obviously the squad is in a good place given that we've just won a grand slam, but there are still a few areas of concern that need to be addressed. Our wide defence is still a work in progress although it did improve over the last few weeks. Depth at 2,9,10 and 15 is a concern, partly due to having less quality players in those positions and partly due to a lack of caps for backup players in those positions.
I think we should be leaving Sexton, Murray and Best at home for Australia while only starting Kearney in maybe one game. We need to learn how to do it without Sexton and Murray and to give Carbery and the backup scrumhalves game time v tier 1 teams. Chances are we'll need them to step up at some point either in Japan or somewhere else.
We should be targeting a series victory in Australia but the primary focus IMO should be squad development. I'd take a series defeat with a lot of work and progress done with the squad like SA 2016 over a 2-1 win where we start the same team that just won the GS. A clean sweep would set up a crack at NZ/England's winning record which would be nice but it's not worth sacrificing development for.
Not taking Murray lets us take McGrath, Marmion and Cooney on the same tour in a scenario where they're fighting over actual game time against Tier 1 opposition as opposed to five minutes off the bench with the game won/lost or a start against a Tier 2 team. We'd be a lot more certain about where we stand with those three afterwards.
We also need to integrate Beirne into the team and get Ross Byrne and Max Deegan capped.
Best is probably planning to retire after the world cup but for him to make it there he needs to play as little rugby as possible in the intermediate period. We need to get other players experience in the position and it'll be no harm for someone else to take on the responsibility of captain for the tour.
Without further ado, a potential squad:
LH: Healy, McGrath, Kilcoyne
Hooker: Scannell, Cronin, Herring
TH: Furlong, Porter, Bealham (Ryan/Moore valid options as well)
Lock: Beirne, Henderson, James Ryan, Toner, Dillane.
Backrow: POM (Probable tour captain), Leavy, Ruddock, Deegan, Conan, Stqander, Jordi Murphy.
SH: Cooney, McGrath, Marmion.
OH: Carbery, R Byrne, Keatley
Centre: Aki, Ringrose, Scannell, McCloskey, Tom Farrell (deserves a shot).
Back three: Larmour, Daly, A Byrne, R Kearney, Conway, Stockdale, Healy, Wooton. (There are more players here as well).
I threw in a few Connacht guys who would probably benefit from a few weeks of the Joe Show. Didn't really want to go with Keatley but every other option is either injured, on trial or in truly woeful form. If 40 players are too many Deegan, Dillane, McCloskey and a winger can easily be cut.