Lineout also needs improvement if potent backline is to show its potential.
The Blues have been the beneficiaries of a timely visit from All Blacks' scrum coach Mike Cron as they prepare to avenge their week one defeat to the Highlanders.
Cron has been working with Sir John Kirwan's pack this week as part of his brief to help all of New Zealand's franchises. So, while his visit is not the result of an SOS following the Blues' close-run victory over the Cheetahs, a match in which their set piece was again put under severe pressure, it should serve to focus more attention on the improvements their forwards have to make against a Highlanders' team who have their own set piece problems.
The Rugby Herald's Stats Centre indicates the Blues have by far the worst performing scrum in the competition with a 67 per cent success rate. Kirwan's thoughts on the competition's scrum issues have been well documented but there is no doubt his players, and not just the referees, have to take responsibility.
Veteran Tony Woodcock and the improving Charlie Faumuina are among the best props in the country - are they getting an acceptable amount of power from the other Blues' forwards? That wattage and the combinations which must provide it would have been one of the issues on Cron's agenda. Re-integrating Jerome Kaino, possibly at No 8, will be another.