Sounds like a great jam, and I have some awesome ideas for useful things, but I will need more time than three days. A week? Could you manage two weeks? Remember that the longer the jam, the better the resources that people make.

it's true, but some people can only work over the weekend. You may, however, start earlier. This is not a competitive jam. The main idea here is to make tools to help everybody in the game dev community =)