Code review comment for lp:~vanvugt/mir/simplify-DisplayReport

I'm not saying that this report couldn't do with improvement but...

The reason for the "report" interfaces is that we can do more than simply logging events (although that is want we've done mostly - but IMO that is due to the early state of the code).

What I'd like to be able to provide is reporting code that can respond to a "ping" with a summary of current system activity - the state of outputs, connections, surfaces etc. I think this is something that we will need within half year.

The "report" interfaces should provide support for this tracking of the state of the system programmatically - which is far easier if the events that need identifying are distinct calls and not different text strings.