I have started putting in the work to test it, and I have tested the Eternal Army deck it is based on extensively.
Jaxi is a great turn one play, a dying wish minion, provides two bodies for death watch, and his ranged half is cresendos favorite target. Its a mainstay in my eternal army deck.
The deck has a ton of dying wish, and is very good at maintaining card advantage. The deck needed another turn one play to go along side jaxi/gor and Lurking Fear was a fairly natural pick to help accelerate the deck. There are not a lot of other turn one plays the deck would be interested in, next best choice would probably be inkling surge as you can use it for a turn one play in a pinch while always being a great card later on.
I may be cutting cresendo in favor of Shadow Dancer. If I like that change, Jaxi may end up going.
Ephemeral shroud is another option instead of jaxi/lurking, as is the crypto/furosa/inkling package.
But so far I like both jaxi/lurking and have been playing it a bit in the top 10.
Nekoma and Lurking have both felt a bit slow, swapping them for inkling and void hunter which achieve about the same affect while being quicker and more versatile. They provide an actual lower curve rather then an artificial one with roughly the same draw power, and as always its nice to have actual digging power for combos rather then an awkward tutor.
Traded Void Hunter and Jaxi for Darkfire Sacrifice and Vorpal Reaver.
Card advantage has not been an issue, and the deck lacked any early threats before its 6 mana combo turns meaning it was really easy to get snowballed. Darkfire Sacrifice, and Vorpral Reaver help speed up our clock and give us an alternate gameplan, which also makes desolator and dancer much more efficient. Without cresnedo, and the abundance of ping, jaxi wasnt pulling his weight anymore.