I recommend you using SteemPlus. It is google extension for google chrome. It does give information about vote and mentions but I don't know how accurate it is.
https://chrome.google.com/webstore/detail/steemplus/mjbkjgcplmaneajhcbegoffkedeankaj?hl=en
Also, mobile app Esteem is another option.
No notification
There is no clear notification that we have a reply, we can't mention our friend
That is not user friendly at all. No newbie will download google extension for notification, go to steem chat to chat, go to dtube to watch video and so on. We need most of them in same place !