I'm affraid I must agree, to an extent. With the exception of the Ancient song (that most of us will never scribe), they just don't carry the "wow" factor. Dark Echo could have, but the short duration and long recast delay crippled it.
Ancient Chaos Chant - This song rocks. Of course, it's "Ancient" .. so it better. :p I would definately use this song a lot if I were to scribe it.
Dark Echo - I actually like this song. It's an ability we didn't have before, which is nice. It will be rarely memmed, and probably only in PvP, but it's still gives us something that we couldn't do before. (Granted, the duration is too short and the recast too long - why use a 50% chance to block a spell when we could just use DA for a 100% chance to block spells and everything else?)
Echo of the Trusik - [b]another[/b] Rizlona upgrade. Depending on how hard the quest is for this song (or how rare the drop), Muse may no longer have a reason to exist... I mean, at least when Muse came out Rizlona wasn't useless because you could get it a level sooner. And I personally wish they would've added in a small (10%?) healing focus effect to it to make it more interresting (a one-stop shop song to make whatever the group is doing.. better).
War March of the Mastruq - More DS and more ATK are difficult to scorn, but this song [i]is[/i] still just a blah upgrade to Warsong of Zek (which, IMHO, is a much cooler song name). But at least it comes at a later level so WoZ still has a reason to exist.