I'd like to have only new ideas and comments post to the slack channel, not every single vote.
Also, a new idea creates two slack messages, one with the description and another with other details (name, score, assigned to, Visibility, etc). I only need the one with the description. Please remove the other one to avoid the noise, or give me a way to turn it off.
You can create a Slack filter based on Idea name and comments, which would allow you to reduce the noise in your channel.
Select Product | Ideas | Name (field) and another filter for the Comment field to customize your channel.
Doing so should limit the number of messages, as well as the content in your channel.