GGG relationship with fan-made content?

Hi all,

Long time fan and player on-off for sometime.

Also as an amateur board game designer I have had many (PoE related) ideas floating around in my mind for sometime.

Before adapting PoE IP/content into a system I have developed, prior to releasing as a free, fan-made project I wanted to understand content creator experiences with GGG.

Are GGG heavy-handed with "cease and desist" type action with creative content using their IP? I certainly am not intending to make a profit and intend to release the project as free and fan-made.

I can alternatively "move on" and use my own extensive worldbuilding content, but feel like I would rather share my passion of PoE with other fans of PoE.

Thoughts and input are appreciated.

Thank you.

To clarify - don't want to "waste" my time to simply have it shelved by GGG for unknown reasons...