That's a great solution and I could try to find some time next weekend to implement it but in my opinion, many readers won't notice such a hovering feature, even if we add a bold explanation.
I don't know as well if it's an option for the mobile version. I've not checked it but hovering might be not possible for mobile devices?

I can implement it as it's a really clean solution and it would help a lot to gain more space buy maybe it's already enough to remove the comment section entirely as it's pretty meaningless sometimes and I can just link the comments from the members who initially presented each explorer?
Opinions?

If there's support for your suggestion, I would implement it, of course.