ya, i may be over-excited about this project, this is why i suggest many things.
to have a central place to "log" things, i always suggest the forum itself... posts are already readable, you don't have to receive emails notifications, simply visit the forum often to see new posts (icons are good for that) ... and you can Tag the posts when something is good...
like [>>0.31] for things that will be in the 0.31 version... ya it's a versioning tag thing... i like tags in topic titles...

... [REJECTED] is another way to tag...
point is that actually, i posted a new topic for each suggestion, so it's easy to track... adding more and more content to your mailing-list is another way to track things, but i find the forum to be less intruding ... and the wiki... is a wiki... anybody can modify, even if the admin is not happy with it...
another problem with the forum is the private side... if coders have their own place to suggest and debug, it'S ok.. but for now, i see only the place where everybody can suggest and talk about anything... that's why i had to PM you about that bug today... i can'T put my user/pass and url because i want it to be seen by you only.
anyway.. this is my way to see things.