Highlanders CEO Roger Clark said the club are "extremely disappointed" by the conduct of some of their players last weekend.
All Blacks star Beauden Barrett impressed as the Blues withstood the Chiefs to end their run of back-to-back losses.
A pulsating Super Rugby Aotearoa clash saw the Hurricanes survive a second-half onslaught to stun the Crusaders in Christchurch.
The Waratahs have been struggling to find form and a resounding defeat to the Rebels also came with an injury setback for their captain.
Ardie Savea thinks it would be "awesome" to see a Pacific Island team added to Super Rugby.
International fixtures will take place in a temporary window towards the end of 2020, if proposals by World Rugby are approved.