As I become more comfortable with the program, I notice that certain things that are afforded to Default Attributes are not accessible by Custom Attributes.
Modifying/Adding Custom Attributes through command line isn't available, you cannot set Custom Attributes as the target when importing from other file formats, and Custom Attributes do not carry over when copy-pasting to different sheets.
I wish you could define what settings were considered default in the settings as well. Would help when making multiple sheets using the same format without importing from another sheet each time.
Basically, allow more to be done with Custom Attributes!