I would like to suggest an option that would add a Countdown to the Confirmation Dialog Box which opens when you hit Start. This should be user configurable (via Extra -> Settings under the cdrtfe (2) tab, in the "Confirmation" group), and would say something like "Automatically Accept Start Confirmation after xx Seconds". This could be a checkbox with a set number of seconds (e.g. 60), or a dropdown box with multiple options (e.g. Disabled, 30, 60, 120).
The reason I am suggesting this is that I like to have the confirmation in case I click Start accidentally, or click it then remember that I've forgotten something, however if I'm in a hurry to leave & I want my Disc to be done burning when I come back I am likely to click Start, and leave without realising that I haven't confirmed my decision (meaning I come back to 'are you sure?'). The addition of this option as I've described it would allow for people who want it to AutoConfirm after a period of time, and for those who prefer it the way it is currently, similar to the currently available "Deactivate all (!) confirmation dialogs" option which allows users who are confident that they will not decide to cancel after having clicked Start and thus prefer that the confirmation not appear, and those who are not so certain of their own infallibility and do wish for a confirmation prior to writing to the disc.