Hi! I don't know what Crimson Echoes is, but I can say this.
Blizzard shut down the SC2WC3 TC because of copyrighted artwork (And they possibly felt it challenged wc3 or something), and they shut down other projects only because they claimed to be "expansions" or were too professional looking. Rest assured I am making sure none of that silly nonsense happens to SoW. As long as SoW claims it's a fan-made campaign and not an official expansion it should never be attacked by blizzard.