I think if they do start this (which would be A-MAZING) they should do it after this year, so its kinda like the first 20 years-ish? Kind of a collector's edition anniversary thing. No matter how many years they include, it would be EPIC.
The dvd is an even better idea, just a lil peek of the back stage, actors, how it all came together...*sigh* if only if only.