It was never said whether or not they are trying to save it from entropy, in fact their end goal for the universe, and what they're trying to save it from is only described in metaphor, so it's kind of impossible to know what will or won't help in achieving it. Whatever the final shape is, I'm guessing it involves some kind of worm god space magic to meld "worthy" life into the fabric of the universe itself--this is just speculation on my part though.