Not something I need right now but I think this might be useful

An option to set a maximum amount of orders for a certain period.

So for example, in the pre order plugin you set a 15 minute interval.
So in the orderform, for each hour you have 5 options.
ex.: 14:00 – 14:15 – 14:30 – 14:45 – 15:00

But if you know you can only prepare 5 meals each 15 minutes, it would be good to have a setting that removes for example the 14:15 spot once 5 orders for this time slot have been made.
That way you can avoid that 20 people order food at the same time as this will mess u you schedule