They should have stayed with -1- account system so Google+, Youtube,..etc. would have been added as services. Why this was not done is beyond me, they already had the software infrastructure running in terms of how Gmail works with its various services, all that needed to be done was add G+ and Youtube to the list? Also it would have meant that people felt safe to try these other services out rather than ending up with a confusing array of accounts that can be (at times not) cancelled, merged, and, most of all, have to be managed separately (and I guess sometimes jointly if "Hangouts On Air" needs to work!) :/