Unfortunately the country with the best evidence isn't willing to share it.
Access to crash area: If Ukraine would stop bombing the crash site area the investigators could complete the ground activity.
Why didn't Ukraine stop their assault until that area could be accessed? Don't forget that the rebel army is fighting for its life. The Ukrainian army is simply intrested in punishing.
Nevertheless, the USA, Europe, and Ukraine are exploiting what might be explained as an accident on the part of either side to justify their punishment of Russia.
The illogic is disturbing. It's like theists claiming that life is so complex that it can't be understood - THEREFORE we will proceed to believe in God as the explanation.
No one knows who shot it down, but Ukraine, USA, Europe proceed as if they do because it fits their plan. Americans are too stupid to even care. After all "Russia is the Bad guy when it comes to geopolitics".
As far as the so-called "intercepted phone conversation and facebook reports" even the United States isn't accepting that as proof anymore. That stuff is too easy to falsify and Ukraine has already been caught falsifying pictures in the war.
So if the United States isn't backing the possibly fake phone conversations why should anyone believe them. However, the very unsophisticated Ukranian Right Sector - Oligarch Prisident keeps using that info because his constituency wants to believe it.
The only reason the USA doesn't release the sattelite surveilance is because a case may be made for Ukranian forces shooting down the plane.
It also may be too ambiguous and leave room for Russian speculation. Why provide evidence when you already have gotten the world's opinion on your side.
I hate these kind of things that produce conspiracy theories. But this isn't 911. We all saw Jets fly into the WTC - end of that story. But in this case the US has billion dollar space cameras trained on the war zone. They probably know. They are also smart enough to know that if they doctored that evidence it would be found out by technicians in the USA that know what they're looking at. So they co-opted the anger of Europe to kick the Russian-Dog. Hey! You gotta vent somewhere - so use the ennnemi du jour.
My personal loyalty isn't to the US or Russia. I don't trust the kind of people that reach the highest ranks in any human organization.