Jackson's move to the Dockers was the big talking point of the trade period, with the former Melbourne ruckman determined to lead Fremantle to a flag.
The 21-year-old's ability to play in the ruck and up forward will give Fremantle vital flexibility and help fill the void left by the departed Rory Lobb (Bulldogs).
Brayshaw has been blown away by Jackson's skill at ground level, and cannot wait to see the big man in action during the season.
"There's a few that have really impressed me but I'm probably most excited for Luke Jackson," Brayshaw told Perth's 6PR when asked about the club's pre-season.
"He's shown already that he can be a really dominant ruck and forward prospect.
"As a big fella, his ability to almost play as another midfielder once he's tapped it down (is) really exciting, and he comes out the front of stoppages and takes the game on.
"For a big bloke, he's got really good skills in tight. He is probably my number one most exciting prospect."
Brayshaw has also been impressed by Jaeger O'Meara, who was traded from Hawthorn during the off-season.
O'Meara's arrival will help offset the loss of decorated midfielder David Mundy, who retired at the age of 37.
Fremantle ended their six-year finals drought last season, beating the Bulldogs in a thrilling elimination match before falling to Collingwood by 20 points in the semi-finals.
The Dockers have set themselves the target of winning a flag by 2025, and the player group are hungry to achieve that goal.
"We all got a taste of what (finals) is like, to be right up there, and we all loved it," Brayshaw said.
"We want to be a top-four side and give ourselves the best chance going into finals.
"We don't want to be a side that's just making up the numbers. We want to be right up the top and that's what drives all the players and all the coaches."
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