Hi Francis, really glad to see some of these improvements to the G+ sharing capabilities. I tried integrating 9 months ago but the solutions at the time were a bit awkward.
Out of interest, is there any plan to allow direct posting to G+ personal pages w/o a prompt in the future? I see that G+ company pages now allows this via an application process. I assume that this prevents abuse or a 'farmville pandemic', which I can completely understand, but was interested if this would eventually extend to personal pages. I imagine Buffer, among others, must be nagging at you guys for this, haha :)
For the record, I am the developer of Postcard and would LOVE to integrate G+ in an elegant promptless experience.https://itunes.apple.com/us/app/postcard-write-once-share/id589678038?mt=8