Sorry Frank, but I agree wholeheartedly. I agree in principle, but I think I would say allow more built-in options for how they are handled. It is a difficult question, though. Maybe it is, but not this customer. Sample size and power calculations for the normal-errors Extremely important, but teaching people how to use it is probably more so, and that is difficult.
Many packages offer easy access to sample size calculations and that can be very dangerous.
By contrast a colleague was called in to help a student who had already done a large and complex survey with 600 in each of two samples, again as suggested by the program, when any careful assessment beforehand would have shown that 60 in each would have been more than sufficient, which at that stage was now clear. By the way Juergen Bock, a reader of this list, has a very easily accessible and comprehensive book on sample size calculations. The original German edition has now been gracefully translated into English and should very soon be published. I suggest you keep an eye out for it. Both topics were high on the list I sent privately to Charles.