Here is a link that shows various military bases in Australia: https://www.google.com/search?q=military+bases+in+australia&rlz=1C1RXQR_enUS967US967&biw=1536&bih=746&tbm=lcl&sxsrf=AOaemvIfmrPeokAdUhalhVGTn96dSYsWwQ%3A1637025911352&ei=dwiTYdD3FKGKytMP866w4Ak&oq=military+bases+in+australia&gs_l=psy-ab.12...0.0.0.22138.0.0.0.0.0.0.0.0..0.0....0...1c..64.psy-ab..0.0.0....0.IIAuOUxMZJU#rlfi=hd:;si:;mv:[[-10.900524899999999,155.6314183],[-39.351374899999996,113.78761030000001]];tbs:lrf:!1m4!1u3!2m2!3m1!1e1!1m4!1u2!2m2!2m1!1e1!1m4!1u16!2m2!16m1!1e1!1m4!1u16!2m2!16m1!1e2!2m1!1e2!2m1!1e16!2m1!1e3!3sIAE,lf:1,lf_ui:2
There are military bases on the northwest, north side, and northeast side of Australia. Some neighboring countries close to Australia are Singapore, Indonesia, and Papua New Guinea. For mission creators, they can use Australian bases for friendly forces to launch against hostile forces as in World War II scenarios. To the southeast of Australia, there is New Zealand. Here is a link to a map that shows various military bases in New Zealand: https://www.google.com/maps/search/military+bases+in+new+zealand/@-39.8827622,168.1054184,6z.
New Zealand can be used to create friendly bases for allied forces as well as create harbors for friendly navies. It can be used to create missions or campaigns in a WW2 scenario. For the sake of variety, the same information could be used to create campaigns or missions in modern times. Should ED create WW2 or modern bombers, Australia or New Zealand can be used as based for friendly forces.
I read your comments about the significant distance between Australia and Antarctica. For virtual pilots that want to create missions (and related YouTube videos) on these endurance-type missions, this map provides the platform and inspiration. Creative minds can create intriguing backstories, can place things/resources/installations (and much more). To make the transoceanic flights more enjoyable, ED can add a "time compression" feature that speeds the mission along in designated time increments. New pilots to DCS get the opportunity to practice air-to-air refueling and flight management. Martine assets like carriers and destroyers can be placed anywhere as part of a mission or campaign. ED can add the option for random flight issues, which provides virtual pilots with challenges. In turn, they can share the information with others what happened and the lessons learned. A realistic one-way trip between Australia and Antarctica is approximately 4,000 miles with an estimated flight time of 12-14 hours.
As for Antarctica today, it has no natural resources and is mostly uninhabited. At best, there are some research stations that collect weather data and ice core samples. Idle minds might be inspired to create backstories for missions/campaigns on why fixed wing aircraft are flying such a great distance to either defend or to attack. Some man-made islands might be added that are conducive to human habitation for various purposes. Maybe a natural resource is discovered and it has potentials that might or might not benefit others.