I don't think there's any point putting more resources into this. My personal theory is that the captain was planning to fly somewhere like Diego Garcia as a protest and thought that messing with the pressurization would allow him to knock everyone else unconscious so that he could do what he wanted. But either his oxygen mask didn't work or he didn't put it on properly and he knocked himself out as well.
No more resources is a correct response.
One does have to ask “what the heck came over this pilot” who had the career “dream job” many can only dream of in this forum.
I can't even dream as I'm overweight and do not have 20/20 vision.
I remember thinking the same thing when that Germanwings plane crashed due to pilot suicide. That was a young guy with his life ahead of him and a fantastic career. But I've also done flight training and I know that some of our instructors who were professional pilots didn't really love the job in the end - it became routine/monotonous to them and in the end it was just a job. For other people it's really a passion, but what's your passion today could become something that you get tired of tomorrow, especially if you have to do it every day for a large portion of your life. I like driving, but only up to a point and I think flying is a lot more of a novelty but it can also get tiring if you do it a lot.
In one class some of the younger guys were asking an old ex-Iberia captain if he missed being in the cockpit and his reply was something along the lines of "there's the sunrise and there's the damn sunrise over the Atlantic with the sun shining in your face at 4am". I don't think he missed it. It made me think and I believe that although it's an exciting job with lots of benefits, it does have its downsides (such as taking you away from your family, etc).
Probably for a person that is already unstable it's the kind of job which could make them worse. If you believed that getting this dream job was going to solve all of your problems and then you get the job and the problems are still there, for example, now you longer have the hope that getting a better job will solve your problems. Just like a lot of really rich and famous people have committed suicide.