2 idea is invalid, we are copying twitter UI and the idea of using fewer bandwidth is the same with having a dropdown list or switching to another page, notifications are loaded periodically, we are running api calls for notification in the background to fetch the latest data.
It's currently not possible to see who voted on each particular Buzz or Comment.
Let's add a feature like Hive.Blog where voters can be seen once something is hovered over or clicked on.
** https://hive.blog & https://ecency.com has this, and both are Open Source.
Here is the link to Hive.Blog's repo: https://gitlab.syncad.com/hive/condenser