Love it! There is a 3rd party 'toy building blocks' company that made a neat Tintagel Castle set I picked up last year for only £30. I have since populated it with the D&D Minifig set to show a band of warriors interrupting the villains mid-ritual.

I'm amazed its taken this long for Lego to do anything TTRPG/Wargame related. They could do a whole Heroquest-style dungeon game you build from scratch and it would fly off the shelves.