It is great that DLC are self contained and fully agree that DLC on DLC are not often a good idea. However, I still feel it would be great if there was more interaction between DLC. Bright harvest and trelawney (diving bell) are great examples, as they work perfectly well on their own, but can also interact nicely with other dlc from different seasons (this would to some extent even be the case without the diving bell working in lol). Having shared needs/resources between lol and the Arctic or the Arctic and scholars would be such a great feature which would not compromise the self contained nature of DLC, while at the same time reward customers that got all DLC/incentive buying all of them.