I have following suggestions for the aforementioned 'Addons' menu. They stem from spending too much time in the settings, figuring out how to manipulate the lists to my liking. Priority on all of those suggestions is low.
1) Rename 'Enabled' button into 'Disable', rename 'Disabled' button into 'Enable'. It might sound trivial, and I might be the only one irritated by that, but the current naming goes against the name logic of pretty much every button in TeamSpeak (OK, Cancel, Apply, Less, More, Logout, etc), some even in Addons (Reload, Uninstall) displaying an action that is going to be applied, rather than the current status.
2) Filter options. Alphabetically sorted is great, and again, I am probably an exception but I have installed a lot of addons, and do enable/disable these addons quite frequently. Being able to filter by status (Enabled/Disabled) and filter by addon name(, addon author, and addon description (optional)) through a Search (for example similar to File Browser, Main Window Search) would be really nice.
3) Minimal View (not sure how easily achievable that is). I am not sure how it looks on 4k resolution, but on 1080p the list of addons is getting crowded really fast. I suggest showing a minimal view by default, and expand to the current view on "select/hover/focus".
I could understand that the last two suggestions might go against the idea behind the Addon menu design decisions. In that case I would suggest something comparable to the 'Advanced permissions system' option.