It's just another inexpensive Glock-A-Like, good for those who are seeking a cheap alternative to a Glock, but little else.
It's been done to death at this point, and by a lot of big-name manufacturers I might add, (Smith & Wesson, Springfield Armory, Mossberg, Taurus, the list goes on) so I honestly doubt that the PSA Dagger will be taking any business away from Glock when that are so many other inexpensive firearms fashioned after Glocks.
I don't have anything against Glock derivatives, in fact I carry a Smith & Wesson Sigma SW40VE which I honestly prefer over the Glock due to better overall ergonomics, but that's just my point... The Sigma is one of the oldest Glock derivatives out there, a derivative which has endured to this very day as the SD Series, but it has never even come close to really challenging Glock, despite featuring improved ergonomics that even the haters will begrudgingly admit is an improvement, and being offered at a significantly lower price-point. Other brands have tried as well, each one bringing something new to the table in attempt to improve upon the Glock, all with varying degrees of success, yet once again, none of them have ever really even challenged the Glock's dominance, much less overtaken it.
In short, there can be no such thing as a "Glock-Killer" because no matter how many new firearms are released, Glock has a reputation and legacy that cannot be beaten. It's kind of like a Colt 1911, lots of companies offer 1911s, and many of which are objectively superior to a Colt, but a Colt is a Colt. The brand name is so synonymous with the firearm that to this very day even folks who don't know about firearms are likely to identify a 1911 on-sight as a "Colt .45" even if it's not manufactured by Colt or chambered in .45 ACP.
Realistically speaking, the Glock design has been improved upon six ways until Sunday at this point, with the competition in many cases offering firearms of more sophisticated designs, sometimes at even lower prices than a Glock, yet Glock remains one of the most successful small arms manufacturers out there, and their firearms outsell the competition in spades. So if objectively more advanced, more feature-rich, more sophisticated designs haven't succeeded as Glock-Killers, then yet another budget-priced Glock derivative most certainly won't either.
Still, I'm sure that the PSA Dagger will find its niche amongst those who want a Glock, but can't afford a Glock, yet aren't satisfied by the Sigma, XD, MC1, Millennium, etc, or simply fancy it on its own merits. But the folks who have already decided that they want a Glock, nothing else will do, because Glock did it first, did so successfully, despite the existence of more sophisticated firearms. Glocks just plain work, and if it ain't broke, don't fix it, right?