However, as many have said transport there is near non existent....industrial zones are nearby (quite a different surrounding actually when you consider it juxtaposed)
Jarrett Walker, one of the world's top transport planners, recently wrote a book with some thoughts on where to locate if you wanted good transport, either now or likely in the future.
His maxim was 'be on the way'.
Suburbs that are dead ends never have and never will have good transport. The only people it would be useful for are people who live in that area and there's not enough of them to sustain a good service. Sanctuary Lakes, Sandhurst and Eynesbury are all dead ends on the way to nowhere and do not have significant service. Even if locals agitate they may get a very limited service that's unlikely to be well used (eg Gowanbrae).
Whereas a suburb that's located on a road between two established centres will almost certainly have transport that will improve as those centres (and areas in between) develop. Even if there's not much there right now. Because it's on an orbital route between bigger places the horses of Yarrambat or the plains south of Dandenong have service far better than those places along justify.
Map 27 of the Melway tells you all you need to know.
River Valley Estate is one giant dead end and it's not gonna change.
That's no matter how much the road engineer in me fantasises about an extension of Buckley St across the river and over a railway line to connect with the Ring Road.
Bridges are out of fashion and in established areas there's strife with existing land owners (who wouldn't exactly welcome a connection to depressed Sunshine), greenies and more. Similarly Sanctuary Lakes lacks a bridge connection to Merton St, so crowds onto Pt Cook Rd the long way around. Again I don't think this will ever be fixed.
Parts of long-established Sunshine North don't even have buses yet. Eg nothing along Surrey St/Berkshire Rd.
That may justify something up Duke St, but there's nothing there yet. Why? Because everything in the area is 'on the way', running up Ballarat Rd or Suffolk Rd.
Some backwaters become exclusive retreats. Maybe their values will grow despite lack of amenities. But for somewhere handy to build IPs and fill them with tenants it doesn't look a particularly desirable place.