I understand where your coming from in your priorities. Other users may feel the same way as well. However, from a development standpoint, it's much easier to get authentication to a network going before doing the posting to that network. Once authentication is done, we'll be able to store the user's access token and then use that to post on their behalf.
Without doing that first, we'd have to have the user go through a bunch of mundane steps, get a token, paste it 'somewhere' and do a lot of validation for that token. There are other ways, but we really don't like kludgy stuff where we can avoid it.
So, authentication will be first, then auto-posting. Maybe after Twitter auth, we'd start on auto-posting to FB and Twitter and then G+ auth and then add G+ posting as well. Not sure of exact ordering, but I hope you get the idea.
As always, thoughts and feedback are welcome!
Thanks,
Alex