There is no way to "hack" the official api to add subpatches support ?
You'd have to modify +[QCPlugInPatch allowsSubpatchesWithIdentifier:] to
call the method for plugins that support it. Since it's a class method,
not an instance method, this is really ugly (everyone who does this will
add their own variation, which is very unclean). And totally unsupported:
if you're going to go about hacking the Official API, why not just go to
the Unofficial API? It's not like hacking the official one will somehow
be more supported...