FCRM 3.0: No ability to filter eligible posts for recurring campaign

Note: Previously requested in v2

When creating a recurring campaign I'm able to filter eligible post by how old the posts are (e.g. 7 days). But I'm not able to filter by any other criteria, such as post category. Thus, I can't segment out different types of posts for specific recurring campaigns.

Scenario: I run a motor blog with different types of motors such as car, truck, and motorcycle. Someone signs up for a newsletter about motorcycle motors, so therefore I only want to send him new blog posts about motorcycles and not about cars and trucks. Using the recent posts block in the campaign editor I can filter posts to only show motorcycle updates via a category filter. However, when defining the actual recurring campaign there is no ability to filter on categories. Therefore, if I post something about car motors, the motorcycle recurring campaign will still be sent, though the content in the recent posts block will be blank.

Below is an image of the recurring campaign editor showing that only age of post can be filtered, but no other post filtering can be done.