I appreciate your listing these items out again.
The follow function was removed due to an issue and it will, hopefully, return once I get the issue figured out and solved.
I understand what you are saying about the issue of songs displaying better, with more information and proper links. I will try to get the code author to work on getting that modified to where it is actually useful.
The comment issue is a complicated issues and a bit of a tricky wicket. The code author is working on something that will, hopefully, solve that, but it is a pretty big project that may change the overall look of the site. Once he gets something completed we will likely be one of the first allowed to test if and implement it, if it works.