Is it really useful to say that this place and this place are in the same neighborhood? The latter is what I think of as Elliot Park; low-rise and mostly pre-war. What is the value of stretching that brand all the way north to 6th or 5th, or even (mostly) north of 8th?As discussed previously, this part of town already has two distinct names (and two distinct personalities) that people already know: the Mill District and Elliot Park. No need to reinvent the wheel. The only thing that really needs a proper name is the Commons Park, which would then cover the area immediately in front of the stadium.
I don't know. Setting aside the lingering quasi-governmental functions neighborhoods have, neighborhoods exist to help identify and brand an area. Just as there's little real value in dividing up very similar areas into different names (pop quiz: draw the boundaries of Longfellow, Cooper, and Howe without looking at a map), I don't think it makes sense to force two very different areas under the same umbrella. This area (high-rise) will develop differently from either the Mill District (mid-rise) and Elliot Park (low-rise), and I think that alone should be enough to warrant a new brand.