Rename existing "Symfony" project template to "Symfony Standard Edition" and add "Symfony Flex" with selection of recipes ?
check required PHP version 7.1.
project based on symfony/skeleton:
composer create-project symfony/skeleton:3.3.x-dev demo
recipes:
https://github.com/symfony/recipes
https://github.com/symfony/recipes-contrib
Symfony 4 demo:
https://medium.com/@fabpot/symfony-4-a-quick-demo-da7d32be323
A tip for flex users:
Add these two lines manually:

After that jumping between template and controller is working again. :)
But I couldn't find a workaround for goto-translation.
@Haehnchen does Symfony Flex projects properly detected and PS suggest to enable Symfony plugin?
yes, in additional every single component will trigger it via: https://github.com/Haehnchen/idea-php-symfony2-plugin/commit/f1779090c3f118785d8f479a384359dc196c03b7
I suggest checking the requirements in composer.json. The user might not directly use Symfony components but other libraries might require them (Symfony console is very wide-spread). So people might be confused why the Symfony plugin got enabled without them "using" Symfony components.
Symfony console is very wide-spread
Thats the point. this plugin provides not only support for a Symfony fullstack application. there is for example also a console arguments completion. so we are moving away from this fullstacks
Do you have an example of a third-party library which uses Symfony console and you profit from the plugin's features (indirectly)?
Most helpful comment
A tip for flex users:
Add these two lines manually:
After that jumping between template and controller is working again. :)
But I couldn't find a workaround for goto-translation.