Has he though?
Your previous example of Woods, Taupau, Galloway and Gavet (was he ever considered good?) was literally his rookie year and still not an impressive pack with just awful depth beyond them.
Since then, the forwards have only gotten much worse. We spent years with guys who are fringe first graders at other clubs as regulars in our line up (Seumanufangai, Sue) alongside a rotation of benchies that proved they were never up for first grade (Buchanan, Lovett, Santi, Collins etc).
I don't think Brooks will ever be a premier halfback, but IMO he has never had chance to become one. I certainly do not think him incapable of leading a halfway decent side to finals. Nor can i blame him for the Tigers having not made it there during his time.