I dont think Tears is lacking something, IMO it ever has been kinda boring, you did a good twist turning it in a more imponet, treatening version (its very less boring than the original one, when I say boring it doesnt mean bad, its good but doesnt give that feel that other CV music give to me, this version sounds like a more adult version of Dracula's Tears, IDK if you can understand
).
Invitation is good to me, I said that its on the right track (as in done right, not right direction) because I understood that you dont finished them yet, at least thats what I understood from your post. Also, Im using a broken headphone, I can only hear one side, so I dont know if the instruments are well distributed for stereo or dont. It sucks, since some rare musics on youtube give me some strange noises because of this.