Stick to your Cryo/Chrono, if i knew before hand that Linker would be so heavily nerfed till one nerf coming) i would had changed.
To make things fair, if they removed only the hit count from JP, it would make it viable, but in a situation where the fight is intense and there is 3-5 chars hitting the linked mob and the linked mob have huge HP pool, JP fade out so fast that it is ridiculous.
And i am not even counting the bug, if it is one, in JP that make it fade before the 100 hits it supposed to hold till it fade.
I noticed that it fade in different hit counts (from 15-50).