107 Hindley Street in 1999, around the time that many arts organisations were moving into the vicinity, including Adelaide Festival offices above the shop.

[4] Mackie and Miller sold the shop in 2007 to Jason Lake and Katherine Woehlert, who had been working there for some time.

[12] From 2008 to 2013, he served as chair of the South Australian Premier's Communications Advisory Group, the state's watchdog on tax-payer funded advertising.

[7][3] In 2012, Mackie was appointed head of the Office for the Ageing, under SA Health, as well as becoming an interim director at the Adelaide Botanic Garden.

[4] He resigned in June 2022, citing the "corrosive nature" and "relentless domination of the Team Adelaide faction".

[19] He was as a Trustee of the Adelaide Festival Centre Trust from 2000 to 2003, and a member of the Libraries Board of South Australia in 2002 and 2003.

[3][7] He has also served on the Council of the University of South Australia,[7] and was on the advisory board of the Dame Roma Mitchell Trust Fund for Children and Young People[9] between 2000 and 2004.

[3] Mackie has been a member of the external advisory panel to the Assemblage Centre for Creative Arts at Flinders University, headed by Garry Stewart,[20] along with Jo Dyer, Wesley Enoch, Rebecca Summerton, and others.