You make some good points -- can't say the album entirely sold me on the band, however it's their first record I don't mind listening to from beginning to end. I think the lyrics and vocals have improved enough where I can take them seriously. If not for Hayley, it wouldn't be much to rave about though.
Well you never know they could have another crazy awesome vocalist step in!
but of course most bands would be nothing without their vocalists who really wants to hear a band do all instrumentals?