It's not a huge burden, but we're already seeing some negative effects worth discussing. For example I have now twice paid the 5 karma penalty replying to downvoted comments which were not trolling at all; they were downvoted because people disagreed with what they were proposing.

If we decide to wait two weeks, we need to decide on specific criteria that we will judge in two weeks' time to decide whether to modify or remove the new feature. If the new feature stays anyway because a few people decide unilaterally, then we might as well discuss it now.