• While there is only one such application, its UI will be the obvious standard and confusion in usability will be avoided.
• Any more than a single such application will benefit from the coordination encouraged and aided by this BIP and BIP 123.

"To avoid doubt: comments and status are unrelated metrics to judge a BIP, and neither should be directly influencing the other." makes more sense to me as "To avoid doubt: comments and status are intended to be unrelated metrics. Any influence of one over the other indicates a deviation from their intended use."  This can be expanded with a simple example: "In other words, a BIP having  the status 'Rejected' is no reason not to write additional comments about it.  Likewise, overwhelming support for a BIP in its comments section doesn't change the requirements for the 'Accepted' or 'Active' status."

Since the Bitcoin Wiki can be updated with comments from other places, I think the author of a BIP should be allowed to specify other Internet locations for comments.  So "link to a Bitcoin Wiki page" could instead be "link to a comments page (strongly recommended to be in the Bitcoin Wiki)".  Also, under "Will BIP comments be censored or limited to particular participants/"experts"?" You could add:

• The author of a BIP may indicate any commenting URL they wish.  The Bitcoin Wiki is merely a recommendation, though a very strong one.