Most people want the easy dungeons for random dailies since they're so fast, and ask for a way to turn off DLC dungeons for dailies. You're in the minority here.
But I agree. You should be able to toggle "No DLC" on or off, and in addition, you should be able to toggle "No Base Game" on or off for your random daily. those are options the community has been begging for for a long time, just as long as they've been begging for hide shoulders, hip plates, and flaps options for cosmetics.
+++ that`s why I bought DLC dungeons, it`s only challenge if you don`t like trials. Learn mechanic, complete vet 1-2 times every DLC dungeon and you can go random vet.I want the opposite.. im sick of the easy ones.. I get as much satisfaction from that as solo harvesting a node =p