One thing I have found with the legacy abilities is that it is very annoying that you can only use them when you use your heroic abilitie. My surgestion is that you dont have to use heroic to be able to use your legacy abilities but if you have a class or advclass abilitie that does the same thing like force choke and legacy force choke is that it activates the cooldown for both of them, that way its more fun to play with them but does not over power you to much, like choking someone for 6 seconds. Anyhow thats my view and most of my fellow guild members view on that subject.
thanks for reading.
yours Phantomdarklord