I have to point out this problem again that:
when I am invited to vote for a doubted translation, I find it is not suitable that, if I vote for it, the system does not allow me to comment, even when I don't think the work is perfectly done; so if I want to vote for but I still want to edit or suggest better solutions, how can I choose? You know, it is rather boring if I vote for it and then return to the comment page of it. I have to ask the administrator to give me a way to vote for and comment at the same time.
The fact is, there is only comment field beside the vote against option, so this is misleading, for example, if I am lazy, I would prefer to vote for, instead of vote against, because I don't want to comment any thing. And the result will be like that, votes for will be much more than votes against.
I don't think the comment is compulsory, but if you begin it biased, I could not imagine it will be ended just and fair. So,
Why not attach one comment field also to the Vote For option? even if it is not compulsory?