Everyone knows that blueprint-only assets are inherently lower quality than cpp assets. We really need a means of excluding them from searches.
Hey there @ArcheNovalis! 
Welcome back to the Epic Developer Community. Thank you for taking the time to provide feedback on the Fab search and filters. I have passed this along to the appropriate team.
In the mean time, please feel free to check out the Fab Roadmap for upcoming releases, including new features and improvements.
Thanks!