I think there's a real danger to having "The Show", actually, and that NXT, in a world where every other promotion has "The Show" might do well to avoid it. I think we all saw the problem with a promotion having a single show designated the biggest one at WrestleMania 32. If WrestleMania 32 (edited down to threeish hours, of course) had been literally any other PPV, I think we'd be talking about it as a great show. But the expectations for it were so high because the hype for WrestleMania is just off the charts, that it came across as a massive letdown. And what conspired against Mania 32? Largely in some ways lack of talent due to injuries, largely in other ways due to booking issues. NXT, though, is doubly susceptible to losing talent - not only can their talent be injured, they can also be called up at a moment's notice. What if, a few months ahead of Super Takeover, a talent was called up? How willing are people really going to be to be double booked for a long period of time? Probably not very. Furthermore, NXT is as susceptible to bad booking as anybody - even Takeover Dallas, an excellent show, has had some (myself included) a little underwhelmed at the booking. Takeover Dallas was amazing, but if it had been Super Takeover, and the Joe/Balor match had gone down as the main event the way it did? I think I'd be pretty disappointed, actually.
The obvious upside to "The Show" is that when you deliver, people are doubly satisfied. But, I, personally like that for NXT, any Takeover can be "The Show". You don't have to raise or lower your expectations because it's a B-PPV or because it isn't Super Takeover - it's just Takeover, and they're always great. NXT has found a formula that really works and I don't think chasing some mythical yearly Supershow just for the sake of having it is smart.