Fastl4 TCP Profile Best Practice

In general, for the forwarding-type Virtual Server (which act as mere routers), you do not need any advanced functionality. So your current configuration is better than the default settings.

It makes your BigIP transparent/non-intrusive in terms of idle timeout enforcement. It's also better from memory-use perspective. One notable drawback is that it doesn't align well with AFM module. You couldn't apply any ACL rules to this VS while retaining the stateless behavior. AFM is strictly stateful.