We're adding in more functionality around permissions. That is going to start with the ability to add multiple permission rules on the same table.
This will allow the creation of multiple permission filters with OR criteria, and allow different fields, records and table permissions depending on the criteria.
For example if you wanted to implement: a user can edit their own profile but read everyone elses profiles. You could do it!
If you'd like to join the beta of this functionality then please get in touch :)