The addon log is fine for some small addons. In case of a addon that spits out a lot of information, the addon log section is really bad. In my case with zigbee2mqtt:
The buffer is too small: The oldest log entry is about 5min old.
There are no filters: Filter out all errors would be really awesome. Filter by keywords would also be nice.
Auto refresh: Just show me the new log entry without pressing refresh all the time. When configuring something (e.g. bind a device with zigbee2mqtt) this would help so much if it does not want to work right away.
Layout of the log: I have long line log entries that are displayed in multiple lines while only half of my display width is beeing used.
Oriantaion of the log: I like that new entries are at the bottom, but to see them is quite troublesome (even with the too short buffer). It’s not really a problem on desktop as you can scroll down quite fast (but its still annoying). It’s more a problem on mobile device where you have to scroll a lot.