A template that gives a fixed gp/xp/item with some suggestions on possible plot that the local DM then invents their own adventure. Was used in Mark of Heroes, Xen'Drick Expeditions, and Living FR.
Something along those lines, if set up correctly, would be amazingly nice to have.
As mentioned previously, one of the biggest drawback of a Living Campaign set up like AL is that it is incredibly impersonal. With very little exception, nothing the typical player does will have any real noticeable effect on the campaign as a whole, and the unfortunate-but-understandable reliance on the official mods means that there is comparatively little in the way of customization or tailoring of things to a particular character concept.
The first problem can be fixed somewhat with better/more expanded module reporting and longer reporting periods (seriously, one mod I think became open for public play with something like three days of reporting time left available for it). But being able to actually engage specific characters in such a limited scope has always been an issue for almost all Living Campaigns. With potentially tens of thousands of players all across the globe, having any sort of unique (or even localized) gameplay is almost impossible.
Living Greyhawk handled some of this problem by having a much more decentralized structure, with the various Triads controlling a regional area of real-world geography, being able to create their own local mods, etc. Heck, the Duchy of Geoff even had its own mailing list for roleplaying, which was an amazing godsend, because it allowed for characters all across the region to interact outside the limited scope of the mods, and more importantly, the Triads were monitoring and administering the mailing list, so what was happening there was actual "legal" and real for the region -- we had more than one event occur that caused issues and problems for the region, and some major regional (and some cross-regional!) plotpoints were developed without a single person ever actually sitting at a table and rolling a die. I cannot begin to tell you how so much more 'alive' that made the campaign feel.
AL can never be LG, of course, but anything that allows for that sort of engagement to be applied to AL play, I am 100% on board. A way for a local DM to customize an adventure to a certain player (within the proper limitations, etc.) would be amazing. Heck, LG had a process by which you could request the ability to write a special module for a specific player to engage in and complete a unique opportunity that would not be suitable or even possible in a global campaign. One of my characters got permission to have mission written for him to allow him to rescue the skull of a kinfolk from where it was being held as a trophy, and -- altho I was never able to write it before -- the campaign wrapped up, I had been given permission to write a special mission wherein another player in the campaign could have a bunch of his friends form a 'strike team' to venture into the Far Realm to recover his character's body for resurrection purposes.
Stuff like that can't happen in a widely-spread Living Play campaign like AL, but anything that might allow for something similar, I'd love to see. So if these Admin-only modules might potentially lead to something more down the line, I'm all for them.