Was thinking about this earlier, when creating a new thread from a comment, couldn't the url of the score be automatically added as the first line of the first post? Would have thought that would be relatively simple to implement, but I've no idea how the invision plugins work.
Edit:
Looks great in the threads, but doesn't fit the activity feed very well, any chance of reducing the size of the preview/removing it from the activity feed? (great work though! :D)
Edit edit:
Aaaand by the time I edited the post you'd already done it