I agree 100%, I don't think it is wise (at least initially) to water down your product with wizards, etc. Focus on that niche and focus hard.
I can see the arguments both for and against wizards and gui query tools.
On the one hand I personally agree with the jcdreads and viggity. These sorts of interfaces are very difficult to get right and dilute the SQL focus.
On the other hand a number of people have suggested going this way, so people do think it would be useful.
I have no immediate plans to go this way but I intend to be responsive to what customers request.
Cheers