I found very useful to see all changed comments (or commented objects) you are "interested in" at home page. The definition/rule of "interested in" is:
- comments replayed to you or you participate in replay,
- added to your tasks or tasks you booked,
- added to your projects in any task
- and you have permission to see them.
It is similar to change table you see at project page. I think this table shold be contextual depending where you are:
- at home page (all comments you are interested in),
- at project page (all comments in project)
and both in accordance with the rules i've mentioned at the begining.