First of all let me say thank you for Tinkercad and the continued efforts to improve it and a special thank you for the shape generator functionality which has the potential to really make Tinkercad even more useful to all levels of users.
As more shape generators are added it will become harder to find a particular generator. In lieu of a search feature (which I think would be very useful), what about being able to select one or two categories for a shape generator? They could then be displayed grouped by category - perhaps when a user clicked on Community > Community Shape Generators a sub menu would appear listing all the categories ('Any' might be one of the categories). After the user selected a category the shape generators for that category would be listed in the format they are now.