Well, it's unlikely they will do any of those things. So, with Eovaldi going tonight and the Sox being trounced, 9-5, this season could well be over.
Indeed, it's entirely possible Bloom and John Henry both knew the season was over when there was no attempt to fix the rotation--for the reasons you stated. JH didn't want to go over the luxury tax amount, and Bloom didn't want to give up a decent prospect. In their defense, I honestly don't think this rotation is fixable. However, I also think your ideas are as close as any I've seen for fixing the rotation.