Suggestion: a 'my discussions' page (or similar)
So I've been really excited about this page, but lately I keep coming here, glancing at the front page, and then leaving. I think it's in part the minimalist design and the way the colour of the clicked links is very similar to the colour of the unclicked ones, making it unclear at a first glance which threads one has visited already.
Since the pace of debate is moving much slower than on Reddit here (which I think is a good thing), it would be very useful to have some kind of a 'my discussions' page that you could save threads to - either threads you are participating in or just threads you are excited to see the responses to. This would make it much easier for users to return to interesting discussions without having to browse around ~ for ages trying to find that one interesting topic.
Yes, I agree we need to be able to save and find things more easily. In fact I had to actively search for the link I wanted to give you, because there wasn't an easy way (besides bookmarking) to find it in my history, or whatever a saved area would be called.
Anyway, @BuckeyeSunday has a very detailed post here and header #2 may be of interest to you.
The rest of the post is full of interesting ideas and I would suggest reading it.
Right now I'm using the dracula theme (the link colour turns from blue to pink) posted by @Bauke here, you can also find other themes here, if that one isn't your cup of tea.
But, that being said, it is a valid criticism of the main site and themeing it isn't particularly useful for those that can't have Stylus/Stylish on their devices.