I'm hoping for a Levitating Ghost/Steel. That would be a monster in the rain.
With respectable base Special Defense and some form of recovery, it would fit in any metagame nicely.
I'm inclined to believe that most users of Earthquake tear Heatran apart even with Shuca Berry and Air Balloon is prolonging the inevitable; that your opponent will Rapid Spin your hazards away and Fighting/Ground/Water attacks, that are ever so commonly used, either have a secondary attack to catch the opponent switching out, or the possibility of OHKO'ing Heatran itself. Drizzle in general prevents Heatran itself from significantly posing a threat with its Fire-type attacks.
To appreciate this 'Mon I recommend building a properly EVed Heatran around a solid core, with the right idea in mind to abuse its best traits: resisting, status, phazing and working in tandem with a weather inducer like Tyranitar for residual damage, etc.









