Most of the features are not supported by XC (Routes/Service Policy) where iRules are supporting.

If we integrate XC with iRules or some other programmability then we can do most of the things.

Even customers also expecting the same & most of customers are migrating from BIG-IP to XC then definitely we should have this functionality to achieve all these options.

Ex: Conditions matches with boolean values,
Scanning the payload and take the decisions,
Creating the Datagroup with strings and send blocked pages based on datagroup matches,
Extract the filename from URI and rewrite the URI with add filename in the end, Logging the headers based on the matches of method and uri and etc...