Something I was thinking about for Offensive Cyclohm is to not make it a worse Zapdos. Zapdos can get Electric, Fire and Grass/Ice which is comparable to Dragon, Electric, Water/Fire and with Zapdos' higher special attack and speed along with very good bulk himself, he's a good candidate for a similar role. Cyclohm has extra bulk, physically, no Stealth Rock weakness and a better offensive movepool but Zapdos is immune to Spikes, Toxic Spikes, Earthquake and doesn't die to special attacks.
Furthermore, Cyclohm's ground, ice, dragon weakness makes him hard to pair up for defensive coverage as only Bronzong covers them and they make it difficult to fit in things like Heatran on the same team when you add in the fact that Cyclohm does not resist Fighting which makes it hard to add in things like Snorlax who would compliment Cyclohm nicely otherwise.
All things considered though, Cyclohm is still a very powerful threat but restricts the team around him more than others. Ice + Ground is a very strong attacking combination and being weak to both is not a good thing IMO.