For me ideal will be format: PFCS 96 pages/monthly and PFPC 64 pages/bimonthly. Reasons: 64 pages books look better on shelf than 32 pages booklet. More material about CS - better to include information for new continents for example. More space to expand information for players - how much better will be Blood of the Moon with 32 more pages?
Personally I prefer more information on smaller number of topics than less information on twice amount of the topics. I think even for players will be easier to use new material from 64 pages PC line (smaller amount of books to search for options).