I would say that this is a great set for the mini-figs and a good source of pieces.
Stuff I dislike, the green flags (its a bit of diversity) but c'mon green flags!
and the red gate. Red gate with Green flags... is this the keep of Sir SANTA?
Anyways, when I started collecting Lego I wanted this set and the King's Castle. To have the "good" guys (lions)
agains the "bad" guys (falcons)... though the roles could be reversed... the lions could be bullying the "innocent" falcons...
My last thought is that the Black Falcon Fortress is the set
that they really wanted to put out, but they didn't have time to put it out earlier. The Knights castle was put out for play with the Kings Castle (so less priority would have been used in the set design)
Just some * random * thoughts about it.