I've explained how they'd handle it after more DLC comes out. Would still basically work the same way.How many expansions are coming out for this joint? Are they going to have a weekly for each iteration of new content? I don't know. I suppose they COULD do this, or they could just take the hit that this will cause for (let's be real here) a small portion of the player base and just move on.
No doubt just moving on is what they'll do instead of putting it a little effort and making sure all their customers will have a Strike to play any given week. Not the worst thing in the world, but a bit lousy.