I have several things that would make Big Oven a better match for my needs.
Meal Planner/Calendar: I'd like to be able to display a week at a time vs. the current day at a time. This allows for much easier planning since I can see the whole week at a glance. Currently there's too much going back and forth to see what I planned on other days. I'd also like to see a way to archive these weeks so that can be repeated/reused thus saving a lot of planning time. Another great feature would be to include the nutrition summary for each meal and snack time and a total for the day in a separate column.
Nutrition: I'd like to see an option that allows me to enter the nutrition for the whole recipe vs. asking the system to gather that information. Big Oven always seem to have ingredients that are hard to match up with the correct nutrition information and entering recipes therefore take a lot of time. A huge number of the recipes that I now use already have the nutrition totaled for the recipe. In those cases, I'd like to be able to enter this data myself. Otherwise, the current entry process just takes too long.
Grocery list: I'd like to see more than one format for this list and/or at least the option to export a csv file format so I can reformat to a preferred list structure. My wife prefers a list that has a separator for each section of the grocery store, vs. just a listing with the section displayed together. This tends to bundle the whole list together and makes it harder to follow when in the store.
In another business I've evaluated web-based/ASP software and would be happy to be a beta tester of your new web-based premium system if/when appropriate. I've also spent some time combing the web for other products and haven't seen anything that I think is really worthy. However during the process, I've come up with some pretty good ideas.