presumably because of the things FD dont want us to see..... IF 2.4 was just what was released in beta i would kind of agree with you... but it isnt.
personally i do not want to be spoiled by seeing all the content which is meant to be actually discovered in the game once it goes live.
Based on past expirience, I am counting on the "Thargoid threat" to be Youtube set pieces and new Combat Zones. The Beta didn't add or hint at new mechanics, and frankly if they have added new mechanics I am terrified to think how they're going to function with absolutely no beta testing...