if someone is saw as worthy and they know what they are getting into they should be given the chance to prove themselves is all. They shouldnt have a need to be saved from a harder life then most.
I cannot speak for other cabal immortals, so this only my point of view.
In my experience, the vast majority of players who join Tribunal don't know what they're getting into. This is evident in a number of ways: dying repeatedly, failing to capture criminals, incorrectly enforcing laws, etc...
The rank 50 requirement for Tribunal is designed to cater to the most inexperienced players. Forcing them to reach rank 50 and then having them go through a rather easy induction process ensures that they get the most out of their stay in Tribunal, which I am certain for quite a few players is the first time any of their characters has joined a cabal other than Herald.
I am fully aware that many players do not need me to treat them with kiddie gloves. Understand, however, that I am just being fair. I cannot alter the system to cater to each and every player; a rank requirement for some means a rank requirement for all. If this means veterans have to reach rank 50 before joining Tribunal, so be it. Making sure new players have fun in Tribunal is well worth it.
Furthermore, veterans players that join Tribunal are not losing out in any way. They would have reached rank 50 anyways. They would be going through a system of induction in which the hardest part is simply reading and understanding laws. They would have just as much fun as in any other cabal. They would reach ranks in Tribunal that inexperienced players cannot.