I don't know why... but this is one of the "cursed" sets for me... meaning everytime I try to get it, I fail... outbid, snipped, or won... and then sent to the wrong address, or sent incomplete!
Because of this, my review of this once-simple little set is skewed... I must have it... I drool over it...
That aside, I do agree that it is a bit silly, but I think it kind of goes along with the DM theme - the fortress had a big dragon head, and with some imagination or customization, you may be able to make it seem more realistic.
Also, it comes with the DM figs, which I always enjoy getting.