Whether or not the rebuild is salvageable hinges on whether Eloy, Yoan, Luis, and to a lesser extent Yaz, can be healthier and more productive than they have been over the past year and a half.
If the training/coaching staff is what's holding them back, then making those changes can save this rebuild. If not, and these guys are damaged goods at this point, then this team is going to have a lot of money tied up in average hitters for quite a while.