I'm glad to see this thread pop up, battle regimens are really useful but most people don't take the time to understand how they work. They don't get it right on their first attempt and assume it's broken or that skillchains were better because they don't understand BR.

One interesting thing I found out last night, which I'm not sure if it was mentioned, is that you can get 2 debuffs out of a single battle regimen.

phys atk + phys atk + phys atk + magic atk = physical and magic defense down

After that stacking 3 weapon skills and then a spell yields tremendous results. I've seen others here make great use of it, 2k+ damage, now THAT'S nuking.

Every time I teach someone how to properly use BR, they end up loving the system. A few of us were fighting Kokoroon last night and decided to teach 2 other members mid-battle about it. Worked out spectacularly! It really adds a bit of depth to the combat system and speeds up certain fights.