All but two of his 25-strong squad have been training in Dunedin since Wednesday and will wrap up the latest training camp tomorrow.
The squad has had training camps in Dunedin and Queenstown in September and November, and will hold one more in Perth next month before heading to South Africa.
''We are changing basically everything from the past,'' Kaszala said.
''There are more camps and we are trying to find the right combination. It looks like we already have the lines going, special teams and power play.
''We never ever had this before. We always managed to just put everything together before the world champs. So we are looking much better than previous years.''
Fitness has been the major focus for this campaign and the squad was already fitter last November than it was when it went to Spain for the world championships a year ago.
''We are looking at least another 10% improvement now since November, and a little more through to April. So we're looking to be 15-20% fitter than last year,'' Kaszala said.
As well as working on fitness, the team, which includes seven southern players, played the first of two friendly matches against an invitational side made up of current and past Dunedin Thunder players, and a few Southern Stampede players, last night.
The teams meet again in Dunedin at 5pm today.
Only Auckland's Aaron Henderson has been unable to train, as he recovers from a broken ankle, but Kaszala said he ''will more than likely'' recover in time for the championships.
On the back of an extended build-up, Kaszala, the assistant coach the past two years, is confident his team can improve on its bronze medal a year ago and silver medal in 2013.
''Anything can happen. I guess it just comes down to the day. But we need to be more consistent,'' he said.
''One game we played really well and the next not as well as we could. If we can play at the top of our game for five games, we have a really good chance of winning the gold medal.''
The world championships run from April 13-19, and New Zealand will face host South Africa, Israel, Mexico, China and Bulgaria.
Kaszala is also the coach of the Dunedin Thunder, which starts its pre-season training at the end of the month.
He will be back from South Africa on April 22, about a month before the national league starts.
