We have many Admissions events (e.g. tours, open houses) that have Registration forms attached to them, thus Register links available in Calendars and Event Widgets. It would be very useable to dynamically change the label to a customizable string when a Registration has reached it's capacity. Such as "This event is full" or just "full" or blank. Change style as well of course. Rather than users having to click to open Register dialog, only to see that it is full. They have to pogo-stick into/out of each one to find an available event.