Real-time interaction platform (ex: Discord)
Viki is about the community and about volunteering. Starting from this fact, I consider that it would be welcome to implement a platform that would bring us all together and allow us to interact in real time (for volunteers it would be a great thing).
In this regard, I consider the most suitable is a Discord server. I know that this might sound weird or funny, but as you probably know, it is quite often for more social entities to have this kind of platform to get and give feedback in real-time. I know we have a forum, but I believe that something like Discord it will be more suitable.
Discord offers unlimited possibilities for organization and management, which would surely make it easy to use. Of course, you can also consider your own Viki platform, but which has the same operating principle as Discord.