John, you bring up an excellent point regarding which genre the lyric is intended for. Perhaps that would be a better way for reviewers to approach the issue of a piece 'sounding more like a poem.' It isn't necesarily constructive to hear that comment, unless you know what is meant.
If the lyricist states that the lyric is intended as, for example, a country song, but it reads very poetically, has a weak rhyme scheme, and is difficult to imagine being set to country music, that is a very specific criticism that could and should be voiced. The criticism should be about the suitability of the lyric for country music, not it's poetic nature. But in most cases, the intended genre is not stated, and it would seem a 'given' that the music, whatever the genre may be, would have to fit the lyric, and no comment is needed. It is also very possible that the reviewer just isn't able to discern the intended vocal rhythm and timing. I am not very good at it myself, when I read the lyric posts of others. Perhaps a question back to the lyricist, about the intended genr is the most suitable comment, and will open up a good discussion that will benefit all.
I guess that what I am saying is that, until the song is set to music, and in the absence of a stated intention to fit it into a specific genre, you can't say whether it fits. So if there is something specific that can help the lyricist, say it. Otherwise, there isn't any point to it.
Regarding ryhme, it seems to me that the rule here is, "if it works, use it." Sometimes breaking rules works great. The comment should be based on the reviewers ear, not the rules of rhyme.
It is difficult to get people to review lyrics and provide feedback. But I have found forums like this to be the best place to get constructive feedback, and they are extremely valuable. I am new here, but i am impressed with both the content of the posts, and of the caring reviews. You guys are doing a great job driving this train.
My own view is that the reviewers focus should be on the lyricists success in writing compellingly with regard to strength of emotion, imagery, storyline (if applicable), creative or effective use of language, and whether it resonates personally with the reviewer. If all those elements are present, the techincal nit-pickinig can be worked out in the musical arrangement, when and if the time comes - sort of like a movie script. A stand-alone lyric is a component of a song. It is not inviolate. It may often have to be tweaked to make the song the best it can be.
Am I on the right track in my thinking, or am I seriously off base???