Everyone always says "when you have 12 points left to fill in your list, it's better to take a z-95/TIE fighter than to tack on 12 points of upgrades." You can now say the same thing if you're scum flying the YV-666 when you have 6 points remaining.
The enemy can focus down your YV first, allowing the rest of your list to do what it wants, and end up with another Z to kill along with them. Or they can save the YV for last knowing that after it dies they have 4 more HP to claw through and it's going to have its choice of approach angle when it emerges.
This is a thought process I've had before. "Sure, I could throw in some of these upgrades instead... but what do they really do for me? Are they really a better choice than the Pup?" And often times, yeah, they might be, but not always. I think, even on the YV-666 itself, there's going to be times that those six points of other upgrades are of dubious value and are only serving to add more points to it when it dies. At least with the Pup, you'll get something for those points when the big brown block bites it.
With that said, I still whole-heartedly support changing the MoV ruling on it, and maybe the wording to keep at least a EPT (and maybe one crewmember, if for no other reason than I love the idea of having a K4 or Outlaw Tech riding shotgun!).
Really though, the MoV change alone would be enough to give it actual competitive value.
I'd also like to point out that this thread reminds me that I really, really wish that FFG would actually comment on their own forums. Because I hate that The Hound's Tooth is probably the most unused of all the unique titles. Even Slave-1 is finally sorta useful thanks to Extra Munitions.