Melbourne's already-blooming skyline could soon change even more with yet another super tall tower proposed for the CBD.

CBUS Property has proposed a 300-metre tall skyscraper that will be part of larger development project at 447 Collins Street, bound by William and Market Street and Flinders Lane. The 90-storey skyscraper would rise within the heart of a new city square, but its height would see it overshadowing parts…