Hi there!
Well, I do not think that the "I" cover would be as attracktive to people who don't know the music as this new "Alive again" one.
It looks pretty professional. It's a good idea to make a cover that does not look too "metal". For if you have a cross and a lightning on the cover then maybe some folks are frightened to buy it ("Ouaaah, Metal... nah!). Don't know. Could be so.
So this one is really good.
I also loved the handwriting. Using the logo is good. Recognizable Nightingale.
But to come to the details you mentioned, Dan:
There are two places of action in this artwork. The one are the letters, the other takes place at the lower right. People can't look at it without changing view from the upper side to the lower side. Hm... maybe that's just a problem I have, and noone else.
But I would put the logo and text centred as they are lower down into the middle of the graphic. So distances are shorter. And if then something is missing on the upper side, put some grey lines over the blank place (like the border on the right).
This is how I would do it now. Don't get me wrong, I would have never reached as far as you, Matt. This is brilliant so far! Good job, always!
So long
NICO