Opinion:
XellossMetallium
I just set up Disa again after the aforementioned months. I have to say that it got quite better.
Facebook misses "thumbs up", "stickers" and voice call (the third of them I never use). Whatsapp looks quite complete, only new (web view, but if they'll ever do something I assume they'll implement a private web view which will include all services) and incoming (call) feature are unsupported.
Sms was good. Once I suggested a feature to completely exclude mms, which are very expensive in my country and easy to send by mistake in such an app. I'll check later if they did it.
What I fear the most is Hangouts. I mostly use it for the audio and video calls, and lately for the "dialer" voip part. At this point I hope thay'll leave Hangouts alone and focus on perfecting what is already done.
Moreover, as a Note user, I hope they'll thiny of some sort of all-services "doodle" feature.
Anyway, all things considered, I'm a little more optimistic than before.