I'm happy to say that with two sessions of Lords & Wizards based on Swords & Wizardry and Labyrinth Lord (instead of on ACKS), we seem to be back on track. We are spending time playing instead of trying to fight the proficiency system or worrying about what level of treasure is too much/not enough for the system. There are still lots of bugs to work out and things to add/subtract to get to a "beta" stage, but we are all having fun playing again -- even the players who really wanted the foundation of the system to be ACKS. I'm really glad to see this.
I still have a game room to clean up from today's game, but I did want to say something here as I know people have been wondering how this version was going.