Is it all its cracked up yo be? People claim it is a "super shield upgrade."
I've got to say, in my experience, having run it in lists 8 or 9 times it's never once actually worked for me. Either the ship carrying it (tarn with R7 or else poe with vi and r3a2) hasn't taken sufficient damage such that I use it, or else the ship carrying it gets blown to pieces with overkill damage that AI wouldn't be able to prevent anyway.
A shield upgrade goes "on top" of your existing hit points and so protects your ship from crits for that one extra shot, and it doesn't use your droid up doing so.
Sure, it's free, and should therefore probably go on x wings as a matter of course, but does it bring the t65 back up anywhere near contention?
I don't think so. I think the x wing fix is yet to come in the form of a title. To get around the problem of boosting the already decent t70, I think we'll see a title card - x wing only, can only be equipped for ships that do not have boost. Like an anti Autothrusters.