Last year, I contacted several add-on developers to suggest them to “add an option to customize the location of the tab in which they placed their add-on” :
Example of message that I sent: Select panel - #38 by xan2622
(Click on “Summary” to expand the block)
Unfortunately, the “N panel clutter” is still a reality. Blender Developers haven’t fixed this UI problem yet, despite many posts (and suggestions) about it: link 1 – link 2 – link 3.
@MACHIN3 : Do you allow me to suggest you the same feature request (to add an option in your add-ons preferences to customize the location of your “add-on tab”)? Maybe you could have a look at the source code of this add-on which already supports this option in its preferences? https://gitlab.com/ChameleonScales/Backface_Hiding
Thank you in advance.