Australia picked its T20 World Cup squad and the squad that will tour India in a few weeks as Australia looks to retain the trophy for the first time.

Mitchell Swepson is the only man to come out of the side that beat New Zealand in the World Cup final just under a year ago. With the tournament being played on the fast, bouncy pitches of Australia rather than the slower turning wickets of the UAE, it's a sensible solution.

When you consider that Swepson also didn't play a single game in the UAE, the chances he would be playing in Australia are next to none. Chief selector George Bailey spoke of it to the media this morning.

"We like Swepo's (Mitch Swepson) skill set, but it's a different strategy. We think the spinners in the squad in Zampa, Agar and Maxi cover us really well here."

While Swepson is the man to make way, Australia has gone in with an extra batter, meaning there will be extra pressure on the big three fast bowlers come October and November.

Tim David is the man to come into the squad with Australia looking to bolster its middle-order hitting. Much has been spoken about David's rise to the Australian team, with him having played franchise cricket all around the world and formerly representing Singapore at the international level.

While it's a different journey that George Bailey is happy with, as he described this morning.

"He has been part of domestic systems; he was a rookie in Western Australia and has been part of the Big Bash for a while. It's undoubtedly a unique journey but an exciting journey.

"If you look at franchises around how the world, their skill set to finish an innings, whether it's two balls or 12 balls or twenty balls, are highly sought after."

While Bailey is confident of the selection, that doesn't mean there wont to be challenges for both David and Cricket Australia going forward. He will still be travelling the world playing T20 cricket while representing Australia. However, what David will prioritise going forward is yet to be seen.

George Bailey and Aaron Finch both leant towards needing a home base for all cricketers while acknowledging the fact that cricket is certainly moving towards the franchise model.

"There are no clashes when he's (Tim David) playing for Australia. I think now that he's playing for Australia. The last two years have been pretty unique, so we have been conscious with several players that we want players playing cricket," said Bailey.

"I think it's challenging to just be a franchise cricket without having a base. You might see it more and more, but it's certainly challenging.

"We have worked with a number of people to get them playing whether that's a T20 tournament or some county cricket. We try to accommodate that but not at the cost of the Australian team."

Aaron Finch also spoke on this issue, discussing his need for a state program and what that can give you.

"The ability to be in a state program gives you access to training. When you don't have state training, it takes you longer to get into tournaments, whoever they are. We've given the guys the ability to go play 20-30-40 games a year rather than sitting in a squad.

"Over the next few years, I'd imagine there will be more guys taking the franchise option, but it can be difficult if you're out of a professional system day in and day out."

While David will be the centre of talking points over the next few days, he may not even be required. The question for Australia really is whether Steve Smith or Tim David is selected, and that will primarily come down to conditions and the Australian plan.

Aaron Finch suggests the plan will not change that much, especially going into this warm-up series in India.

"We are settled with how we want to play and the team we've gone in. The only difference might be if we play the second spine with Zampa or Agar, but we are confident that Maxi (Glenn Maxwell) can also be that fifth bowler.

"Playing in home conditions has its advantages; it makes it more comfortable, and you know where you're planning. The competition and group stages into a semi-final and then final is brutal. You have to be preprepared to be aggressive and put the opposition under pressure.

"You have to be mindful of the run rate and all that kind of thing and not take those opportunities for granted. The wickets will be good and there are some serious teams around the world."

Whether Australia can win the World Cup is, of course, yet to be seen, but it is clear that they have made the correct decision by bringing in one of the world's most dangerous middle-order hitters.

Australia's T20 squad will take off for India in a couple of weeks to start their five-match series against India on the 21st of September.

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