I think the issue of the naming of the 'King street extension' is mute. It doesn't matter if it's still King Street or King's Wharf whatever. If you are standing at the intersection, it will be obvious to any laymen the different - King's Wharf (all high density) to the right and King Street and old downtown to the left.
The townhouses aren't that old - roughly early 2000's they went up. This is an example of an as of right development that really didn't work well to achieve what the Dartmouth Plan was trying to encourage. I don't remember it word for word, but the plan wanted more people in Dartmouth. The townhouses did that, but badly. It could've easily been something more. But if the property owner wasn't someone who had the money to build a high density form - he/she built what they could. Such is the problem wish as of right sometimes...it can lead to forms of development that don't make sense over time. The only hope is that in 15 years, someone buy's them all up and doesn't something new...
I know a few planners that worked for Halifax prior to amalgamation in 1995. Many of them are happy with King's Wharf because they share the same idea I have: Dartmouth is an untapped resource waiting to explode with development opportunity. King's Wharf was a great first step, the viewplane review is a great second step. I would say a review of the downtown Dartmouth plan would be the next one. If memory serves, it really encourages a 'small town' type of downtown...that for me just doesn't work since it's part of the regional centre.
That being said, I'm probably one of few planners that think about the centre of HRM as being both Peninsula Halifax AND Downtown Dartmouth...the way the RP says. So for me, I'd be happy to see office development spring up on either side, although with the demand being almost none, I'd say Dartmouth should become the condo heaven of HRM.