It's a good idea Goose, but implementing it maybe hard.
IMHO, what's probably realistic is a set of mission scripting standards being set up. For example, I think that the dyna realities have changed dramatically since IDSL. I saw a lot of problems with playerbase retention happening after that campaign that Four Powers exemplified and AOTK conversely hide with a one time playerbase bounce. Basically, in the pursuit of making the missions harder the newbies and casual players were forgotten. Now we can't find any newbies or casaul players. So, a good standard for any mission pack is to always include in home space a butt-easy, but not short mission so newbies can easily PP farm. NW's planet survey mission is a good example of such a mission. In addition, any mission pack will want a couple "Kobayashi Maru" missions for the nutters and average difficulty missions for the war zones. If all the scripters in D2 and D3 can do that I think we will help slow down the player churn out of the SFC games.