More 10193 Medieval Market Village, 7036 Dwarves' Mine, and 7091 Knight's Catapult Defense would not have been bad, I could go on with those for quite a long time, but the line gets stale if it's just conflict between the same sorts of characters (little changed over 3 years) and few additions to the parts and places categories. They cannot go on the same without change. There were a lot of good sets and designs. I really was delighted with 7094 King's Castle Siege, 7029 Skeleton Ship Attack, 7090 Crossbow Attack and the Impulse sets (5614 The Good Wizard, 5615 The Knight, 5616 Troll Warrior). I've been 90+% pleased with everything.
It was all great, and the whole line will forever hold a treasured part of my Heart of Brick.
But it is time to move on. New characters and factions. New colors and parts. New locations and places. I need expansion for my own creations to flourish. I cannot and will not simply build the same designs and Castles over and over again. What I really would like to see if the line were to continue would probably not be possible at regular retail levels; more shops, defensible internal Castle-support buildings, more farms and peasantry, places for errant knights to quest and fall victim to sorcery, more forests and seaside/lakeside locations. You can get plenty of conflict out of those ideas, if TLC sees that as a sales gimmick, but I'd be happy to see a proper peasant farmer cart, grain windmill, raunchy tavern, seaside port, haunted forest and church with graveyard and nothing else for three more years from Castle. Like I said, I can make those, and the new/old product is where I will pull my parts and populations from.
I really am looking forward to the 2010 product to enhance my creations and populations. The same happened between 1997 and 2001 as we went from Fright Knights to Ninja, Adventurers to Star Wars and into Knights Kingdom and Harry Potter. All parts and sets add to the Great Sorting.
Play well indeed.

There is no life I know to compare with pure imagination. Living there, you'll be free if you truly wish to be. -Willy Wonka, 1971-