I do not think that requiring 50% of the hours be live is beneficial to anyone.  In this day and age, online courses are the most efficient and cost-effective methods of obtaining continuing education credits.  It is inconvenient to ask doctors to take time away from their patients and families to attend continuing education when it can be done in the comfort of my own home.  In addition, you are adding cost to the equation by requiring travel, hotel stays, and food.  During online courses, I am at my own pace and I have to pass an exam which means there is more effort required of me to make sure I throroughly understand the material.  Requiring the CE courses to be live does not cater to those doctors who are constantly on the move (traveling between states and/or countries).