Hi,
1. Category problem, is already fixed. We will post an new update for v4.0 in days.
2. There is a token [ATTENDEES] you can use. I am not sure if this is what you mean.
3. Ok, we can add this feature at the Registration Manager to filter by status.
4. We will add this feature in future release. A workaround may be you can have a matching table with user core profile, by matching the email or user name.
5. On the other hand, we understand that our module is not a perfect or do-everything module.

, it may not be suitable for Golf Tournament registration whereas it involves integration with other data.
Nevertheless, we are working on it to improve this module, so that more users can benefit from it.
6. Feel free to let us know your suggestions, we will do our best to help.