The block overview is slow. Try to improve performance with some quickfixes (index?)
Type: show name instead of id ("Facet button block" instead of "facet_button")
Add a textbox to filter blocks by name or short code (like)
Add channels to the Pages popup, so the Channels column can be removed and the block name /short code get more space
Rename "Pages" column to "Usage"
Channel facet: show names instead of ID