I came back to this after finding:
1) the new Wenatchee ownership apparently decided to file- just as the predecessor did- for BCHL membership.
2) everything has been approved, except by the BCHL. Per rumor, there's one hitch.
The rumor: Wenatchee isn't really serious about the BCHL.
They're trying to light a fire under USA Hockey, or the NAHL, or both.
Best-case scenario for them: USA Hockey negotiates the US WHL teams out of the WHL and into a league at the USHL level. (Best case scenario for Wenatchee, but certainly the least likely from everyone else's standpoint... supposedly. I'm not totally sure small-market Canadian teams wouldn't jump at that offer.)
Second-best: find a way for Wenatchee to not have to pay everyone else's travel bills. More teams in the Northwest, maybe? Simply more stability? This year's alignment with Alaskan and Midwestern teams can't be helping them.
For a team that draws so well, I still don't know how they manage all this.