Trescothick, who played in three Ashes campaigns including a triumphant 2005 series on home soil, said England's batters were also looking to be smarter on the pitch.
Scott Boland will step up and uncapped Brendan Doggett is tipped for a high-stakes debut to try to shore up the loss of a combined 604 Test wickets of experience.
Clarke has the chance to become the first Australian captain to win an Ashes series on foreign soil since Steve Waugh in 2001.
Broad, 36, said the new approach has been a "breath of fresh air".
Former Australian spinner Shane Warne is currently in Las Vegas with girlfriend Elizabeth Hurley and has tweeted his support for Australian debutant Ashton Agar, even as the cricketer spent most of his time beside the pools and poker tables of Vegas.
England are to play three home Tests against Sri Lanka next year and four against Pakistan.
Australian cricket will celebrate the 50th anniversary of its 1958-59 Ashes success at a lunch on the opening day of the third and final Test against South Africa at the SCG in Sydney on Saturday. The nine surviving members of the victorious 1958-59 team will be special guests of Cricket Australia, Cricket New South Wales and the Sydney Cricket Ground Trust 50 years after helping Australia to an unexpected 4-0 Ashes series victory.
Former Australian leg-spinner Shane Warne has criticised England players for their urinating antics and called the behaviour crass and arrogant.
Test captain Michael Clarke labelled Ryan Harris 'as good as anyone who has played for Australia' after the fast bowler announced his retirement on Saturday because of injury.
Limited-overs supremo Ashley Giles is a strong candidate to succeed Andy Flower as England's coach in all formats, cricket board chief Giles Clarke said on Saturday.
A trio of match winners in Stuart Broad, Joe Root and Ben Stokes offer England a bright future in Test cricket but unfortunately for Alastair Cook, there seems to be no end in sight in his long search for a worthy opening partner.
Former captain Andrew Flintoff believes Ben Stokes can become one of England's greats and rates the all-rounder as a more talented player than he was.
Clarke hopeful of Australia finding right mix between youth and experience after the team was described as a "Dad's Army" by former fast bowler and present Yorkshire coach, Jason Gillespie.
Jonathan Trott followed Graeme Swann, Kevin Pietersen and Matt Prior into the international wilderness on Monday to leave England desperately short of experience ahead of this year's Ashes series against Australia.
Factbox on the Ashes series between England and Australia played this century.
Alastair Cook faces his biggest ever challenge as England captain when he leads his young team into this year's home Ashes series against Australia.
Australia coach Daren Lehmann has called on his top order to hammer home the Ashes pain for a dispirited and depleted England in the fourth Test starting on Thursday as they chase a 5-0 whitewash.
Michael Clarke's touring side will attempt to win the urn on English soil for the first time in 14 years and Alastair Cook's hosts will try to win back the trophy following their crushing 5-0 defeat in the last series Down Under.