First of all take the rules for adding a member from the ACC bylaws:

Section IV-2. Required Teams.
Each member institution shall have a men’s and women’s basketball team, a football team, and either a women’s soccer
team or a women’s volleyball team.
Section IV-3. Admission of New Members.
a. Prior to considering admission of new members, the Council of Presidents shall consider the desirability of
expansion. The ramifications of conference revenues, scheduling, student-athlete welfare and the pool of prospective
members may be considerations among other issues. A favorable vote of three–fourths of the total members of the
Council of Presidents is required on the willingness of the Council to consider expansion before the conference
can proceed to consider any candidate institutions.
b. New members must be proposed for admission by three members of the Council of Presidents, one of which must
be from the prospective member’s state, if applicable.
c. Upon proper nomination for admission as outlined in (b), an expression of interest for admission by the prospective
member institution with requested data shall be received by the Conference office. The data will be distributed to
the chief executive officers, faculty representatives and athletics directors of all conference members.
d. The prospective member shall submit to the Conference additional information regarding the institution’s academic
and athletic cultures. Information shall include, but is not limited to the most recent report of the accrediting
agency for colleges and universities, the Equity in Athletics Disclosure Act (EADA) report, and the NCAA
Committee on Athletics Certification report.
e. A favorable vote of three-fourths of the total members of the Council of Presidents is required to extend an
invitation for membership to the Conference.
f. Participation by the new member in Conference revenues will be determined at the time of admission.
g. Upon the admission to the Conference, a new member shall pay a fee to the Conference of at least an amount
covering payment for a proportionate share of the ownership of all real and personal properties held in the name
of the Conference.

Assuming section a) is done and the ACC Council of Presidents want to expand, then b) who would the three sponsors of WVU be for the ACC? My guess would be Clemson, Pittsburgh, and Virginia Tech. Could be others, but I think those most likely. Former WVU President at Clemson, WVU alumni as VT AD, Pitt is major regional rival.

Assuming c) and d) are satisfied with the ACC expansion committee, then we get to e). e) is the 11 required votes. In My Opinion, WVU can point to a lot of the same positives as Louisville did. They can satisfy the football faction, and with Bob Huggins coaching basketball, they can satisfy the basketball faction as well. That is a huge deal. WVU would pass both of those tests.

Then we get back to getting the information provided to satisfy the ACC collective faculties and Presidents over academics. The three sponsors would have to work hard to help WVU satisfy this by referencing Louisville. Hopefully Louisville would be showing progress by then.

The last step would be blessing by ESPN. I don't see and issue here, but ESPN would be asked. If a thumbs up is given, I actually can see WVU getting unanimous support. If Swofford is involved, he has put the committees in place to make this stuff work a whole lot smoother than in 2002.