the reminder emails are only half useful in their current form. without the notes, I have to click through to see the full info. it seems kind of redundant since you're bothering to send the email in the first place. it would also serve as a sort of backup, should the service (or my connection) be down at the time you really need to get to your info.
as someone has already mentioned elsewhere, tags would be great too. in fact, just about all of the event parameters would be helpful. if the messages were designed in such a way that the information was uncluttered, there's no reason not to include context, folder, status, etc.
so I don't sound like I'm nitpicking, I should mention how much I'm enjoying Toodledo! I didn't think anything could fill Sandy's shoes, but I'm really starting to warm up to this as a replacement.