Still haven't read that one, but that was the most intriguing part of Thursday War for me. The stuff on Venezia, I mean.
It has always seemed odd to me that Halo was just UNSC vs Covenant with no other factions involved at all. I guess it makes sense but it was just odd. The Cole Protocol showed a bit of stuff, but even then it was just some Innies with some semi-renegade Jackals.
The entire Halo universe, while awesome, has almost seemed empty to me because of it.
Look at Star Wars. It was the Empire vs the Rebels, yet at the same time there were bounty hunters everywhere, contract companies like Black Sun working with the Empire, factions of crime families like the Hutts trying to run train on the galaxy, and so on and so on. While a lot of it is and was stupid fluff, it added a lot to the universe.
It's nothing I'm outraged about but it's something that is on my mind right now.