I think if you go to the topic page and click the "+post" button you get a new post with the tag added.

Does stuff show up as Frontpage until a mod manually adjusts it to Community under the new system?

Withdrawn: I misread the question.

I'm generally in favour of tests, but I'm not sold on this test because:

• The rest of the internet looks like this, so it seems like we should be able to predict results without having running this test ourselves.
• If we did test it, I wouldn't want to test it forum wide, but in a few specific conversations and this post doesn't suggest any ways in which we  could test it without turning it on for the whole site.
• I would like to see a specific issue that this would be aimed to address. If your worry is that dissenting posts don't get upvoted, well I can see why someone might have been worried about this before, but this doesn't seem to have been a problem over the last few weeks. If anything, I'm becoming worried that the easiest way to gain karma is currently to write some criticism, even if it doesn't really bother to engage with any of the counterarguments.