Having the blockbusting 23-year-old as an option inside Aaron Cruden - with the equally dangerous Williams outside the All Blacks No10 - would made any opposing team's defensive coach lose sleep.
The Blues are chasing Kaino hard too, with coach Sir John Kirwan talking to him on a recent trip to Japan. Kirwan said the meeting was a positive one, adding the 30-year-old, who played 48 tests, was a "real Blues man".
Certainly, it would be interesting to watch Kaino, who would probably play No8, operating in a loose forward trio including the promising blindside flanker Steven Luatua, but equally as exciting would be watching him play alongside Liam Messam and Sam Cane at the Chiefs. The Chiefs' helter-skelter type attack could suit Kaino now he has two years of the fast Japanese game under his belt.
Williams' signature will give the Chiefs the inside running on adding to their two titles next season, but the capture of Savea and Kaino too would make them unbackable favourites.
The attacking abilities of the first two, combined with the destructiveness on defence of the latter, would make an already excellent and well-coach outfit one capable of tearing any team apart.
If nothing else, it shows Rennie and Co aren't prepared simply wait for another title to come to them. They're showing ambition and that's a pre-requisite for franchises looking to build dynasties.