For the power Atomic, the dev's should make this a completely moldable power. Let me explain. Atomic will always have the option to DPS, but you get to choose the support role. So if you choose an DPS/Troll, the troll powers can be different , and you would have a new set of powers if you chose a DPS/Tank. It may sound a bit off, but let me know what you guys think.
The devs originally had the plan to make every power useable with every role. That didn't happen and they won't do it to only one power because that will cause so many problems. Something like this may happen in the future but I kinda doubt it. Despite, loving the idea that I could play any power and play the role I wanted to.