About furture version 4.5.9 of Jomsocial..
There are already many good polls extensions (like Community Polls which is already compatible with Jomsocial)
It should rather improve the quality of embedding (not with Embed.ly at 99dollars / month, too many expensive for many people), offer animated avatar gif, quickly propose what other communities under Joomla already propose: fans, followers ......
And having the possibility of displaying of streaming on 2 columns in Jomsocial Frontend (home), a better rendering in the "Main Content" position under mobile when a lot of plugins are activated at this position, and improve the presentation of the hashtags page.
And especially more talk with other dev teams, like by exemple JoomlaXi, to make working again the fantastic extension JoomlaXi Profile-Type (JSPT) which is no longer suported with latest version of jomsocial with chat and with many plugins like :"My Contacts" - Jomsocial Plugin, "My Videos" - Jomsocial Plugin, "I teach" - Guru Plugin from Ijoomla) when JSPT is enabled ....
Apart from that Jomsocial is an excellent extension.
PS
https://noembed.com/ is a good choice... or many others...