Modify idea project after import from gradle

We have quite a complex gradle project to maintain, so we need to generate idea project automatically with all necessary configuration to not waste dev time.

We were using idea plugin to generate project with "./gradlew idea" for a while now and it worked mostly because it's very flexible due to withXml support.
We apply the following modifications for idea project using this plugin:

• various project/compiler settings
• code style
• multiple run configurations
• reordering dependencies (because of issues like this - https://discuss.gradle.org/t/gradle-messes-up-the-classpath-order-in-generated-projects-when-there-are-mixed-dependency-types/13130 and https://discuss.gradle.org/t/generation-of-intellij-project-files-reorders-dependencies/13917

Now we want to use composite build gradle feature and it seems that idea plugin doesn't support it (or I didn't find how)

So I tried to import gradle build directly. It works with composite build well, but now I need to find a way to modify project after generation. The only plugin I found is https://github.com/JetBrains/gradle-idea-ext-plugin, but it seems to be not quite stable, doesn't have active development and doesn't have withXml support which makes it almost useless to me.

Is there any other way? Could you recommend something?