Please read first!

USE CASE

The big advantage is that you never have to make changes in the community folder, because with every run of the script you delete all symlinks at first and then it creates new symlinks for all folders that you implemented in your script. My Script should only be a template and an inspiration for you.  :-)
You should adapt and extend this script!

Explanation

• 1. at first you look at where your community folder is
• 2. copy your community path with all content to a backup folder
• 3. in this script my community path (not backup_path) is  "C:\msfs2020\Community\"
• 4. under my directory "D:\msfs\" i have folders for aircrafts, liveries, payware, bushtrips etc
  • Aircraft => "D:\msfs\Aircraft\"
  • Livery => "D:\msfs\Livery\"
  • payware => "D:\msfs\payware\"
  • bushtrips => "D:\msfs\bushtrips\"
  • and so on ..
• 5. copy your community stuff from your backup folder (point 2) to the new structure (point 4)
• you can only have aircrafts and so you delete the other lines, than you have only:
  • createAircraftLinks.bat

@echo off

rem del all symbolic links
for /F "delims=" %%a in ('dir "C:\msfs2020\Community\" /b /AD') do rmdir "C:\msfs2020\Community\%%a"

rem aircrafts
for /F "delims=" %%a in ('dir "D:\msfs\aircrafts\" /b /AD') do mklink /J "C:\msfs2020\Community\%%a" "D:\msfs\aircrafts\%%a"
pause

• 6. after your changes for community path (for me it is "C:\msfs2020\Community\") and your community content (aircrafts, liveries etc, for me it is th path "D:\msfs\...") you save the script and run it
• 7. check your community path, there should only be your aircrafts (symlinks under community path, for me it is "C:\msfs2020\Community\") or what you want to link with the help of my script