WowAce

What is the enhancement in mind? How should it look and feel?

Function1:  Allow raid/party players to whisper you. Sometimes when im in a raid and people within this raid try to whisper me, its very lame because i dont want to add this people to my white/friends list.
There should be an option that allowed only this people to whisper me, as long they are in the raid group. :)
(Enable/Disable function)

Function2: Trade Blockings - I dont know if thats able because im not well
known with the lua coding etc.
But would it be able to add a function that blocks only trade`s from people
that arent in your friend/guild/white-list/raid ?
Im not sure about that because its also able ingame to block whole text`s of
blacklisted words/players.
(Enable/Disable function)

Function3: An Option that allows to control that Players below a choosen lvl arent allowed to whisper (also not with identifying).
(Enable/Disable  Choose LVL Function)

Function 1 can be done.

Function 2 should go into TweakHub as a new module.

Function 3 could be done here, I'll have to think about how I want to do it though, as I personally use a whisper addon which handles this already so I don't want to conflict with that.