Hi @Andreas Hauser,
I am definitely for number one! It would be good to see straight away if there are any comments or not . As you mentioned @Emily Barnett, it is a little unclear at first sight that you can click on the Niche names to get further info.
I agree with number three as well. It would be nice to see clearly who suggested a Niche especially if we aim for transparency.
Also I was thinking that perhaps it would be good to have a possibility to modify a Niche description as a reaction to a comment or comments from voters. For example if a niche is voted down because its description was not clear or something in it just does not sit well with voters, they can always discuss this issue with niche creator who can consequently alter the description. Just an idea