I agree with what Phoebe and William have written, and I'll just add a few minor points and then a thought about the process of new project creation.
* When dealing with the WMF and Wikimedia community, you might want to avoid the language of business acquisitions; it's extraordinarily unlikely that the WMF will get into purchasing content for subsequent free distribution, if only for the (for us) perverse incentives it will create.
* The Strategy wiki is not, in my opinion, a great place to propose new projects. It's aimed at long-term and big picture strategy, so it would be a good place to discuss the process of creating new projects, but it is not necessarily well adapted to considering specific proposals.
* The Foundation and the community are not at a place where they can pursue people for project adoption. This is true for a variety of reasons, but the upshot is that you won't find a motivated adopter (someone who will actively court your project or facilitate an adoption) in either group.
It might actually be easier to approach this as a "new project" proposal for the WMF, as opposed to the adoption of an already existing project. While the layout and formal written processes for creating a new project are (a) confusing (b) nonexistent (c) defunct (or some combination of all three), the general concept is fairly straightforward:
(1) Demonstrate compatibility (i.e. resolve legal and philosophical issues, if any) (2) Demonstrate an active community (3) Resolve serious complaints / criticism in a community forum, most likely on Meta (may take some agitating for comments over a period of time) (4) Present the successful completion of 1-3 to an available employee of the WMF, like Erik Moeller, or a board member, who can see that hosting arrangements are made.
If you can do 1-3, you can probably do 4. The Foundation should really facilitate the entire process, in my opinion, but the absence of their assistance doesn't *necessarily* doom the prospect of a new project. It just means that it won't be easy, and success will require the persistent effort of project advocates.
The 4th step is the "official" approval, but history demonstrates that the actual work involved in step 4 is doable. While Wikiversity is the newest content projects, there are other hosted and distinct projects of other sorts (strategy, chapter projects, etc.) - proving that setting up a new MediaWiki instance with attendant arrangements isn't a major hurdle. Once you've accomplished all the steps, you can import your old wiki into your new wiki and get back to work.
Nathan