Have alook at the Canberra ILS Runway 35 chart.
It would be a very foolish & brave soul who would attempt a go round or gentle climb from the straight in minima of 2070ft DH to a circling altitude (whilst remaining visual) of 3620ft. To then circle and land in the Runway 17 direction. (published missed approach altitude is 5100ft)
There are obstacles & terrain in the circling area which are some 1000ft above you whilst your at the 2070ft DH.
Go round configuration from minima on the published missed approach track to published missed approach altitude will afford you terrain clearance.
Point being, one wouldn't modify the procedure in CBR, so why modify it in AVV.