I'd want Hot Feet in there somewhere.
Global = Hedgefund (or some derivation thereof)
I was thinking about that, cause I have Hot Feet on my fire/rad, but I have the feeling that I'm not going to be in the thick of battle like I usually am with my fire/rad. On that toon, Hot Feet makes sense, especially with Choking Cloud. Not so much with this toon. This guy, it seems, is gonna be more of a buffing/debuffing troll than a damage troll.
So far, I'm liking this build. I find myself continuing to run into the mob (bad fire/rad habit) after I've hit flashfire and fire cages, so I think I'm gonna have to take Hot Feet. I think I'll dump the Leadership set since I only took one of those powers (can't believe I didn't put Tactics in the build....). Definitely not my typical fire/ controller, but still fun 
So I've got a new concept character created that uses Fire Control and Cold Domination for primary and secondary powers respectively. My choices for Fire Control on this toon are vastly different than those on my Fire/Rad, and I've never played a corrupter or defender that used the Cold Domination set, so this is uncharted territory for me.
Here's the preliminary build that I'm thinking about going with. I'm more concerned about the powers and slots than the enhancements themselves. Any feedback is greatly appreciated
Hero Plan by Mids' Hero Designer 1.401
http://www.cohplanner.com/
Click this DataLink to open the build!
FireCold: Level 50 Magic Controller
Primary Power Set: Fire Control
Secondary Power Set: Cold Domination
Power Pool: Leaping
Power Pool: Fitness
Power Pool: Leadership
Ancillary Pool: Fire Mastery
Hero Profile:
Level 1: Char -- Empty(A), Empty(5), Empty(9), Empty(34), Empty(46)
Level 1: Infrigidate -- Empty(A), Empty(3), Empty(31), Empty(40)
Level 2: Ice Shield -- Empty(A), Empty(3), Empty(7), Empty(7), Empty(43)
Level 4: Fire Cages -- Empty(A), Empty(5), Empty(34), Empty(34), Empty(37), Empty(37)
Level 6: Combat Jumping -- Empty(A)
Level 8: Swift -- Empty(A), Empty(9)
Level 10: Glacial Shield -- Empty(A), Empty(11), Empty(11), Empty(23), Empty(43)
Level 12: Flashfire -- Empty(A), Empty(13), Empty(13), Empty(43)
Level 14: Super Jump -- Empty(A), Empty(15), Empty(15)
Level 16: Frostwork -- Empty(A), Empty(17), Empty(17), Empty(36), Empty(46)
Level 18: Health -- Empty(A), Empty(19), Empty(19)
Level 20: Stamina -- Empty(A), Empty(21), Empty(21), Empty(37)
Level 22: Assault -- Empty(A), Empty(23)
Level 24: Arctic Fog -- Empty(A), Empty(25), Empty(25)
Level 26: Smoke -- Empty(A), Empty(27), Empty(27)
Level 28: Benumb -- Empty(A), Empty(29), Empty(29), Empty(48)
Level 30: Snow Storm -- Empty(A), Empty(31), Empty(31)
Level 32: Fire Imps -- Empty(A), Empty(33), Empty(33), Empty(33), Empty(48), Empty(50)
Level 35: Sleet -- Empty(A), Empty(36), Empty(36)
Level 38: Heat Loss -- Empty(A), Empty(39), Empty(39), Empty(39), Empty(40), Empty(40)
Level 41: Fire Ball -- Empty(A), Empty(42), Empty(42), Empty(42), Empty(46)
Level 44: Fire Shield -- Empty(A), Empty(45), Empty(45), Empty(45)
Level 47: Rise of the Phoenix -- Empty(A), Empty(48)
Level 49: Consume -- Empty(A), Empty(50), Empty(50)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Containment
post-build edit: I forgot to add recall friend into this build, so now I gotta figure out which power needs to go...