I think the biggest point of this guideline would be to enforce the minimum aesthetic requirements that mappers can currently flat out ignore because there's literally nothing about it in the RC, and the backlash and stepping in of the QAT in some extreme cases show that there needs to be a clarification there.
A guideline is a good idea because it prevents most of those issues to get to qualification, preventing DQ and drama, while still leaving room for creativity if the mapper can justify it and if the community agrees with it, just like any other guideline has done so far.
If things are "frowned upon", why not make a guideline? I believe it's a necessity to write some points down so that everyone is on the same page and to prevent debating again over the same things.
A guideline is a good idea because it prevents most of those issues to get to qualification, preventing DQ and drama, while still leaving room for creativity if the mapper can justify it and if the community agrees with it, just like any other guideline has done so far.
If things are "frowned upon", why not make a guideline? I believe it's a necessity to write some points down so that everyone is on the same page and to prevent debating again over the same things.