I've mostly avoided this thread as it's been action-packed with knee jerk bullshit, but I've got a few thoughts:
Yesterday was just a bad situation for us, Villa are a good away team (as we saw last season) and the early defensive confusion allowed them to grab a goal and sit deep. If we had our first choice attack fit and ready then we could've picked our way through their defence, but unfortunately we had to throw in a group of attackers who are talented but lacking fitness and an understanding with each other.
People questioning why Raheem didn't start need to get a grip. Brendan uses him at every opportunity, so the fact that he was rested can only be because he knew just how tired Sterling was. We all clapped Rodgers when he complained about the owl overworking Sturridge, but when he rests Sterling after a strenuous week everyone kicks up a fuss.
The defence looked good individually and when they gel as a group I think we'll start to see more clean sheets.
I don't think the manager really made any mistakes, he just reacted to injuries and fitness concerns in the best way possible, and the result was a disjointed performance that was unfortunately inevitable.
Lallana had some really good moments despite his expected lack of fitness, I can see him fitting in well after a few games and having a big impact on our season.
Markovic had some nice little touches too but I think we won't see the best of him until next season at the earliest.
I think Mario will play better with quick players running beyond him, something we didn't really have available today.