WAN Status Check

using FortiOs 5.4.1, anyone noticed that WAN LLB health check is now centralized, which mean we cannot set individual health check for multiple WAN links just like the previous FortiOS 5.2.x

another question, in what instance Im going to use WAN LLB rules feature? the way I see it, it has the same function as PBR except you can create rule for certain group/s and you can specify the Destination to predefined Internet Service.

thanks