I haven't played under AL, but I don't think it is "privileged" over home games in the 5e design philosophy anymore than PFS is in the Pathfinder design. To be more specific, I think WotC figures out what they want the class/spell/feat/item/monster to do, then they give it to the AL coordinators to figure out how and if it will fit into AL. If the AL coordinators (sorry if this is the wrong title) feel it will cause problems in AL, it doesn't go it AL, but the tail doesn't wag the dog, and the game element is still released to the general gaming audience.
Some people will assume that AL is "privileged" (see the claims that the unchained summoner replacing the "chained" summoner in PFS "marginalizes" the ARG summoner outside of PFS for an example from a similar system), but I think that is unfounded, because if they felt that way, they wouldn't release anything that couldn't be used in AL, and they clearly have.
In short (and to bring this back to the warlock), there is set of assumptions about what you can do with a warlock in AL, but I don't believe that WotC thinks that is the "right" way to play the warlock in all games.