Well, one nice thing about bookstudies in private homes was that they were usually reasonably close to the homes of people who went to them. So the gas cost for getting to the bookstudy would not be enormous.
I go with liability of having people in private homes as well as CONTROL -- no room for people to have real discussions and becomes actual friends and share information. It could also be that they want to cram more congregations into existing KHs and this will give them leave to do that.
Also, reducing the study to 25 minutes probably means that they won't read the paragraphs, and they certainly won't have much time for discussion.
Thank you, JWR, and I for one believe everyone deserves their privacy (especially here).
Ruth