Love the new design! 
If I may, I have some suggestions, apologies in advance if any of these have been mentioned before.
- When you are filtering have an indicator show that a filter is active.
- Show a count of many items there are when filtering.
- Number of items per page is not functioning and if you are able to get it to work… filtering resets the amount again.
- Right now you are capped at showing 200 items per page, is it possible to just have the page load more in as you scroll down to have an infinite scroll option?
- Adding/removing shelves.
- My Shelves as a hamburger menu next to the name of the shelf to increase usable space.
As to a compact mode, here is some more potential design inspiration.
https://trakt.tv/users/donxy/lists/marvel-cinematic-universe?sort=rank,asc
It is from a site called Trakt that tracks tv and movies instead of games.