Giants of Legend, the first huge set, was the 4th set. With the 5th (Aberrations), they redesigned the whole thing (new rulebook, new starter set, new tiles, new card style, several rules changes). Maybe the 8th set (the 4th of the "new line") will be Huge. This would be underdark, then.
They could do a couple of underdark-related huges (shadow dragon, deep dragon, a dracolich) as well as others (they never adher too close to the theme of the set, anyway)
Gez said:
There have been rumors of a gargantuan or colossal figures for Star Wars and D&D, in non-random packs.
That would rock. I mean, we really need those terrasques and great wyrms, as well as a couple of other legendary beasts.
I thought of this myself, but only as some idle speculation, never really thinking they'd do it. I'd support it, though