and that is starting to annoy me with pushing advertising in certain groups now -.-" …
yes - absolutely. a bit a pity is that WebRTC doesn’t manage to punch through all networks; therefore I’ll need to add the option to connect a TURN (proxy-server) to your account and opening it for your friends+group chats you’re in → then people would need one kind nerd as friend to always be able to connect (even through difficult network situations without central servers being involved); but not everyone would need to be a nerd … not 100% perfect but since offline messages through scratchpads are (will be) always an option too there won’t be a real need to do something fancy just to talk to people …
status sharing like current messengers do; yes I think that’s desirable … I don’t do it myself with the messengers I use because I don’t like the thought of them having my pictures … but with friends I would like to share my moments/joy with friends too =)
anyway … uhm … yes and then sending importable contacts from your contact list would be beneficial indeed!
I think one version that comes with a pretty high standard of privacy should be enough 
I’ll aim for best possible user experience+speed as top priority but with e.g. the option to use stealth mode and just communicating through scratchpads (the only private data that is being shared with your friends is your ip address anyway; and in stealth mode that is not updated/used → I’m not sure how to enhance privacy above that …)