The Swans picked up versatile defender Max Otten from the Oakleigh Chargers and Port Magpies key forward Ben Haren with their first two picks, before adding East Coast Eagles midfielder Eugene Kruger as a NSW rookie with their final selection.
Beatson said he was pleased that Otten, who is the younger brother of Adelaide utility Andy, remained available at the Swans' No.21 selection.
"Prior to the national draft, our aim was to get some further outside leg speed, bolster our key position stocks and try to find the third tall, running type defender and Max fitted that role for us, given we weren't able to accommodate that during the national draft," Beatson said.
Otten told afl.com.au in November that his brother's successful transition to the elite level had reignited his own passion for Australian football.
"I've wanted to play AFL ever since I was a little boy, but seeing Andy actually achieve that goal probably made it a bit more realistic for me," he said.
Haren, an athletic key forward from South Australia, spent 2010 playing school football with St Michael's College in Adelaide and SANFL under-18s with Port Magpies. He also spent time training with Richmond in the off-season in the lead-up to the rookie draft.
Beatson said Haren's versatility made him all the more appealing as a long-term key position prospect.
"He's shown at SANFL Colts level that he can play back and forward. The fact he's a left footer with good mobility - they're the things that we were most impressed with," Beatson said.
Kruger is no stranger to the Swans, having played a number of games for the reserves as a top-up player in 2010.
A latecomer to the game, the South African-born midfielder impressed during pre-season training with a blistering 3km time-trial in late November.
"He's trained the house down so far, and he probably has that outside running speed that we were looking for," Beatson said.
"With the three picks we had in the rookie draft, we were able to address some of the objectives we set prior to the national draft anyway. We're pleased with the mixture of it."
However, the veteran recruiter cautioned that all clubs were generally pleased with their selections at this stage and the fruits of their research would only become apparent in the next two years.
"For a lot of these young players, they have to stand up from under-18 level or TAC Cup level, having never played against men before, into a new ball game," he said.
"The training loads, the training requirements, the knowledge of the game plan - it steps up significantly and to a degree, that's what sorts out those who make it from those that don't."
