“They’re all excellent signings and will provide a lot of headaches for Ian,” Kopczak said.
“It’s going to put people on their toes and it’s going to make people play better because people want to step in their shoes.”
Salford continued their pre-season preparations with a 13-6 win away to Halifax, a week after their victory over Rochdale. But Kopczak admitted there was still areas to work on.
“Credit to Halifax they really give it to us physically,” he said.
“For us going forward there’s improvement to be made but there’s a lot of positives to take out of that game as well.”
A Welsh international, Kopczak is relishing the prospect of representing the Red Dragon at the World Cup later this year.
Wales’ first match is against Papa New Guinea at the National Football Stadium in Port Moresby.
“It’s one of the biggest stages that you can play on,” he said.
“It wasn’t the best of World Cups for us a nation last time but looking forward now we want to put things in better perspective because we’ve worked hard to get there.
“It’s fantastic for the game every nation now is getting stronger,” he said.
“Who knows they might bring Great Britain back at some stage which would be another good thing to have.”