The meeting was run by Representation Review Commission chairwoman and former Timaru mayor Janie Annear, along with commissioners Auckland-based barrister and solicitor Dr Pauline Kingi and Local Government Commission senior advisor Gavin Beattie.
Mrs Annear said the commission's decision would be made before April 10, "but could be released earlier".
Commissioners asked whether 10 councillors would be enough to represent the district, how effective the Lakes Community Board had been, if the council had considered a single transferable voting system, and if the rural sector could commit to a partnership with council.
Once the decision is released the changes will come into effect for the next local government election in October 2016.