David, this is a catch 22 situation. In essence you are asking for a "Casual Review Showcase" and a "Critical Review Showcase". This is a good idea but could lead to difficulties
Ya. Imagine the first time someone posts "hey I really like that" on the "critical" forum and is told they should keep that type of "casual" comment to its own forum. Eww.
The following isn't directly relevant but I typed it, so... I'll put dashes in to emphasize conceptual discontinuity.
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I onced participated in an online music thing that had a chat widget on its home page. You were absolutely forbidden to link to your own songs in that chat, because apparently it had previously been overrun by people just announcing their own songs. OK, so, makes some sense. But in time, there was so little activity that there was usually nothing to disrupt. Still, for years, newcomers who made the very understandable mistake of doing the forbidden "hey I just uploaded a new song" were sure to be answered immediately with a public smackdown and link to Chat Rules. In the end, such chat as there was consisted of around 1/3 illegal plugs by newbies and 2/3 imperious smackdowns by old-timers.