Agreed with Halcyon and Lyn on the fun right now point. Everything will be old, boring and algorithmically optimised in the future. Dwelling on that eventuality the moment a new thing appears doesn't achieve much beyond making the new seem dull and progression seem superfluous in the face of grinding, depressing inevitability. New is new, regardless of the fact it will become tired and old sooner or later.
We also might be overlooking the fact that CCP Affinity has heavily implied these new NPCs are a progression of the TALE AI that powers sleepers and Incursion rats. Some have even mistaken them for actors (though they don't reply to you :p). As the primary limiting factor of live events is man hours, effectively the multiplication of bums on seats and available hours per said bottom. Replacing people with AI actors that can better multi-task and may even be objective driven, while using what real human assets you have to drive the plot dynamically (changing the objective/sub-goals of the TALE Ai session for example) is sensible and efficient asset management and may actually overcome the cost of storytelling issue CCP seems to have.
The latter part of that is speculation of course, but it is heavily implied that they are at least making efforts towards providing a supporting system for dynamic NPCs which may be co-opted by CCP staffers and event managers to engage with us more so than ever before, while actually using less manpower to reach more players.
As the goal of an event is to engage the community (and not the minority of roleplayers such as you and I to the exclusion of the majority), I believe that this is both a sensible and sustainable move, and would love to see where they go with this new paradigm. AI that can be tweaked by 'expert hands' will potentially revolutionize digital storytelling, and I hope that CCP might be one of the first to truly showcase how artificially intelligent middle men can extend the reach of their community-facing projects.
In the end it will become old, grey and as bitter/nostalgia inducing as everything else. But it will be cool at the time, right?