Thank you for the input. I'm not sure if such an idea has already been worked out.
Think about this as a dripping atomizer. In a RDA, you drip juice in it but "can't invert it" if there's a little extra juice .. will lead to juice coming out. The only thing different about my idea (or maybe it is no longer my idea because similar ideas have been worked out. but seriously, i didn't know) is that the tank carries the juice instead of you carrying a juice bottle with you.
Leaking: About the leaking disaster, you allow the air to flow to the juice chamber but while carrying it with you, you have to make sure to close the air vent so that no leaking disasters happen.
Ignition: The steel mesh I'm talking about in the ignition chamber has to be worked out. Somewhat like the 306 atomizer vapero mentioned in
#5 post.
Cleaning/Reusability: The atomizer can be designed in a way to have threads just near the two hole vents near the bottom so that the whole thing can be unscrewed exposing the steel mesh. Just put it under the water jet for it to clean.
Bunnykiller, I think this type of atomizer will have all the 3 points you've mentioned. But I'm more concerned about what aalwani mentioned
#3 post.
From what it looks like with the crappy graphic I designed, it is a looooong atomizer. But the size can be worked out to make it much smaller, just like a Protank Mini.
All of the bottom coil atomizers/cartomizers/RBA do mute the flavor a little and cool the vapor too, but they work!