No, my suggestion is not to scrap the entire thing and make it more complicated.
Here are the two real points I've sussed out of these posts.
1) Changing it would be too hard/time-consuming/distracting for developers.
This is a common argument against suggestions and not always true. In this case, because I'm not asking them to do anything but add a puzzle game alternative, no, I don't think it would be too hard. Yes, I demand fun in my games. And normally I wouldn't bother with suggestions, but there are too many things I like about DDO to stop playing.
2) A puzzle game doesn't fit
Puzzles DO fit in D&D, in fact, it's a defining characteristic. An MMORPG, by its very nature, can't recreate the true impromtu magic of D&D because there is no live DM to judge creative ideas as successes or failures with D20 rolls. So, instead, we have a combat system that breaks down at the 20th level (because of slavish adherence to D20, when 2D20 and 3D20 would REALLY help). And we have puzzles in quests, some required for completion, some required for bonus loot.
A puzzle game would certainly fit in with House C. A crafting house society game. This is how they have FUN. All work and no play... etc...
And, for the record, I have never ever played puzzle quest and never even heard of it until someone posted the name here in this thread.
More thoughtful responses and /signed pls