HI @mahdiyari
1. My first prefer Is : "steemplanet"
2. Second prefer is : "steemine"
3. Third prefer is : "steemphire" = {(ste+em) + (em+phire)}

1=>
Your expected features more comply to "steemplanet"
bcoz:
"steemplanet" the name will cover all the features you expected not only that but also any more features will be added it will also cover with this name "steemplanet"

2=>
My second choice is : "steemine" = (steem + mine)
this is also logical:
all cryptocurrecny related to mine.
on your new features site may be related to mine by the every activity of every steemians. i.e posting, reesteeming, commenting, replying, upvoting.

I am also suggested new feature is:
PC = Personal Chatting( alternate of the Personal Messaging (PM)) with the integretated Group Chatting, and it should be the same page without leaving page. for that, the steemians will spent more time on this page which will help mine steem. and also integrated to video call for more popular steemians. who will spent most of the time on the suggested page "steemplanet".
everything will be there.
thank you for nice project featuring.