My Kabukis work quite well as they are and the P3/510 adapter has solved the leaky coil issue I was having. The 3ml size is compact and filling is too easy to be a problem. I liked the Nutilus Mini better than the full size and was willing to give up capacity for performance. The Kabuki tops them both IMHO.
Same here other than I haven't had a problem with leaky coils.
I don't have any need for a larger Kabuki but hope if there ever is one it's an addition rather than a replacement. I usually have 5 or 6 mods going at the same time, all with different flavors. More than any other tank I've tried, the Kabuki matches my style perfectly in that when it needs to be filled I'm wanting to move to another juice.
I guess it's just another facet of my picky palate along with not liking a bunch of the highly recommended juices.