Scott Burns, Phillip Walsh and Daniel Metropolis will join senior coach John Worsfold and new football manager Neale Daniher as assistants.
Hansen said the new coaching structure had spent more time and effort on the Eagles' game plan this off-season, with the burden of off-field scrutiny less of an issue at the club.
"They've introduced some really good ideas that we're going to have on-field in our game plan, and that can lead to on-field success as well," Hansen said on Thursday.
"We're going to tinker with those over the pre-season and the NAB Cup and we'll probably take another year to really cement them in; I suppose a plan like Hawthorn put together a few years ago.
"With a new game plan and new faces around it will take a little bit of time to grasp. But it's definitely exciting the way we're starting to move the footy, and our defensive style as well."
Hansen, weighing a career-high 97kg, said his own role was also set to change, with a move closer to goals likely after injury allowed him just 13 games in 2008.
But the 25-year-old was confident extra work over summer with the club's physios would see him play at least 20 games for the first time since 2005 and allow him to have an impact up forward.
"I'm really confident, with the work I put in over the summer into my body, that it's going to be an injury-free year and probably my best year to date," he said.
"Other injuries you can't foresee happening, you can't control those, but (with my) hamstrings I've done a lot of work with the physios and hopefully that can see me through the season.
"A focus of mine is to play a little bit more inside 50 and not necessarily play that lead-up role as much. I think my skills can be used inside 50 to more dangerous effect in front of the goals. So hopefully that (extra weight) will help me in contested situations."
Hansen said the additional kilos came mainly from increased leg strength and after a long summer program he was in the best shape of his career going into a season.
The 2006 premiership player had also seen enough from his teammates over the pre-season to suggest finals football was a reasonable aim following the club's 15th place in 2008.
"I think we've got the talent and I think we've got the work ethic," he said. "We've got a core group of players that have had premiership success and played a lot of finals football, so I think with that experience and the excitement of youth we can really go places."
