I've really enjoyed playing. I liked working my way up to a rank 27! Myself and many others are now what are called end players. One of mine and Many others that I know, Loved playing the Arbitration. I honestly had fun playing it. It was like something that you could do as a end game player to test your skills and so on. Honestly I don't even like doing any Arbitrations at all. It is the changes that were made. Now any and everyone comes as whatever and don't care if they die or if they're killing others because of their death. If you die in Arbitration you are done. Now it's more like anyone good is just done with Arbitration! (Arby's) ! The sanctuary is for others who can't hack it in the Arbitration! IDK just disappointed.
Warframe is a Great Game and can be greater, just don't mess with the parts that are good and fix what actually needs it!
From a Dedicated player !