Truth is that I don't know who exactly wrote that great application.
I have to assume that it is someone that is watching very closely what is going on in our forums.
I am sure that it will be OK to open a thread with suggestions that will make that application even better.
My 1st suggestion is to check if it is possible to add that V sign for a thread in which a member participated in the past. I know that this sign helps me a lot .
I mean this one: