Bukkit

What is the enhancement in mind? How should it look and feel?
I would love if I could have a single command redirect to a different command based on the group that player is in.
Please provide any additional information below.
Easy to understand, simple example...
Group blue has their own shop, group red has their own shop. Each group wants to be able to "/shop" and have the command redirect to "/warp redshop" and "/warp blueshop" based on their group they are in.