Adding widgets is something we're interested in; we're keeping track of the feature here. Right now, it's not high on our priority list as it doesn't directly impact the core functionality of the app. Therefore, it's unlikely to happen in the next few updates, though we do plan to explore it in future.
It is our policy not to make features-for-donations transactions, as we feel that would compromise the spirit of the project and set a dangerous precedent that could lead to development becoming beholden to the wealthiest donors. We really appreciate your enthusiasm and your generosity, though--we're going to be busy for a little while getting 2.0 up and running, but we can tentatively scope widgets for 2.1!