Sure you can. At vbb.eniki.de/index.php?target=forum you'll find the vBB forum.
There you can submit your proposal and discuss it with others.
 

Yes, this is possible, too. Post your wishes to the vBB forum.
At vbb.eniki.de/index.php?target=viewforum&select=3 is a wish list, collecting all your desires.
I am always curious about features being missed by the users.
 

Again, a link to the forum: vbb.eniki.de/index.php?target=forum
Eventually, your question already has been answered there.