We would love to present more and more data in the future, but these things take time because they are actually quite complicated in a way that is completely separate from player behavior or data. For example, if a company posted exactly how many players are banned every month I could easily reverse engineer their numbers to figure out a lot more than they want to reveal. It's surprising how much you can predict/project off seemingly independent and trivial factoids 
Policies also change over time at companies. A long time ago it was much more prevalent for Rioters to post exact chat logs of players but we're learning that that isn't ideal--in fact, in some territories it might even be illegal without explicit consent. Many of you have probably noticed that recently I just post language 'trends' and patterns instead of exact chat logs and timestamps. So the data we can present today might be completely different than what we can present next year.
We'll just have to roll with the punches and try to share as much as we can, when we can. As a side note, one of the most amusing misconceptions I see is that the Tribunal is 'my design' and therefore I will defend it at all costs. Little do players know I spent over 3 weeks with a full research team analyzing every aspect of the Tribunal to determine its flaws and whether we should shut it down and build something else instead; during that analysis I proposed to completely re-do Tribunal feedback loops which is why we have Reform Cards and Justice Reviews now. I've said this before but I'll say it again--if any Tribunal data suggests it's a net negative on the player experience, I'd crush it tomorrow. It's that simple.