The question I have is you can get this specialty at rank 4 and 40 renown, but most of the weapons for terminator armour say they require 60 renown to requisition. So when you outfit your armour with signature wargear all you can really take is a power sword, storm bolter or heavy flamer. None of the good stuff.
Does this specialty allow you to access all terminator equipment early since the armour itself is supposed to be 60 renown as well?
Actually, the requirements is Rank 4 with Teminator honors (the Crux Terminatus). Which means you need 60 renown to become a Deathwing Terminator. The main rulebook specifies space marines are not even considered for Crux Terminatus until they acquire 60+ renown.
So, there really isn't any issue or disconnect.
That would be true if it was the Deathwatch giving me the honors and armor. It is the Dark Angels chapter that gives me the armor so renown shouldnt have an effect. Why put the requirement at 40 rank 4 when you need 60?