Are there any Top Secret recommendations when converting all resources classes to default protection by adding the DEFPROT attribute to the resource class via:
TSS ADD(RDT) RESCLASS(resoureclass) ATTR(DEFPROT)
The only recommendation is to implement them one resource class at a time to familiarize yourself with the process and owning and authorizing users to the newly protected resource class. Only after you have tested and confirmed, do you move to the next resource class.