Is it just me or is Hangouts a mess?

Anyone wants to share their complaints with Hangouts, or perhaps how they can happily make use of it?

Some of my complaints:

1. Can't filter list to show just the online contacts. Shouldn't this be a mandatory feature?

2. Notifications. When your device just went online, all messages the entire time it's offline will alert one by one.

3. It adds everything on your Google+ profile, like screen caps, changes status to hanging out, basically everything linking it to Google+.