This is just a suggestion, and maybe a dumb one (or one which has already been tried and discarded) seeing as I do not have an e-cig yet (I'm going to be ordering a 510 kit from awesomevapor.com if anyone happens to know anything about them, probably on monday or tuesday). However if I understand the concept right dripping is just saturating the mesh part of the heating element with as much solution as will adhere without dripping into the other bits, correct?
If this is the case, then shouldn't it be possible to extend a wire or bridge of similar material into a hole you cut in the normal cartridge material? It would be pushed as far as it could go without making the mouthpiece uncomfortably hot (don't know how hot the heaters get, but I believe the filler material touches them anyway?) and should keep the atomizer bridge everyone talks about (this is the part I'm assuming is some thin mesh or wires which absorbs the solution) completely saturated without running over, assuming there was no overflow from the cartridge itself. Or even better one could insert very fine steel wool to get the same effect, having it always connected to the atomizer. The only problem would be spreading the thing's heat out
through the whole of your liquid, but that could be solved by having the connection point between the bridge and the new filler made of some kind of insulator (I a piece of ceramic or maybe some kind of high temp glass would seem easiest to me).
I don't know if this would work, but I wouldn't think it would be too hard to expand the dripping method to get many more drops in, perhaps even whole cartridges worth which were accessed just as easily as if you were putting individual drops onto the atomizer. You could get a real thin dropper and never even have to take the mouthpiece off except to clean it
Has anyone done something like that? If not I might give it a try when I get my 510.