Sandi touched on it above but it isn't uncommon for declared units to be different sizes and percentages could be different right now for current owners of VGF who are represented by the same number of points like 100. A unit in a declaration might be made up of multiple rooms or an entire floor or it might be a single GV and other units might be a a couple of 2BR's. So in this regard it isn't messy for
DVC to add more units to an association in the way that you mentioned concerning a percentage of ownership.
I understand what you are saying though about a concern where your ownership use power could be diluted if DVC declared the new units much higher and eventually reallocated points into the existing units. If they are different than existing but they stick to the letter what the POS says for reallocating then they won't and it won't necessarily be an issue other than if the demand for the higher point rooms isn't enough and it causes a scramble for the existing rooms at 11 months. If they then reallocated points out of the new building to the old your concern would have been fulfilled. We'll need to just wait and see what these resort studios are.
I've said more than once that I'd like to be seeing at least a handful of 1BR's and 2BR's - not a bunch but a few however if they have connecting studios that might offset that need a bit. And if these units are a unique setup (like with a King!) I'm looking forward to them. I doubt that's what they'll have but gotta hope.