Well taunt on tran isn't entirely new (this idea was sorta inspired by Aldaron's old tauntran). but when coupled with toxic it becomes a fairly good wall breaker/poisoner from my experience.
Heatran @ Life Orb
Modest
252 sp atk, 252 speed, 6 hp
-Fire Blast
-Earth Power
-Toxic
-Taunt
Come in on walls such as Umbreon, Cresselia (who's on like every team lol), etc and taunt them to stop their ways of calm minding, cursing, baton passing, recovering etc. Now you can 2HKO either of them with LO Fire Blast. Or poison them if you choose. The reason why toxic works well on Heatran is because it's part steel and has Fire Blast and Earth Power to tell Poison and Steel types to stay away. You can also poison those pesky Gardevoir switch ins that try to trace your Flash Fire. Another cool thing is that due to being a steel type Heatran is unaffected by synchronize poisoning him. Pokemon that usually take advantage of poison such as Breloom and Heracross won't switch in because of fire blast (ok lol, pretty much goes for every heatran but whatever). So you're pretty much guaranteed to poison something without any negative side effects or something blocking it, unless they switch in a steel type for some weird reason. most poison types don't like taking fire blasts off of such a high sp atk stat. Except tentacruel who gets hit by earth power pretty hard.
Like metal sound tran, this works pretty good at terrorizing noobs that try to copy Obi's stall team on Shoddy. And of course this counters other walls such as skarm, forretress, obibliss, Dusknoir, Uxie, etc (I guess every heatran with life orb or specs counters most of these but whatever). I just thought this was a cool set regardless because you don't have to worry about steels/gut pokemon/poisons/poison heal pokemon/synchronize pokes, not like they would switch in, but you're still pretty much guaranteed a toxic because of that. If you can switch in on something that doesn't pose a threat to heatran before using toxic.
I suppose Heatran could run more HP EVs for durablity against such walls, but I haven't ran any specific damage calcs yet so I just run max speed for now.