#2 Lesser is always better
There's a famous saying that too much of anything ruins it. While we all love wrestling and catching up with new and exciting actions and storylines each week, going through the 3-hour long RAW is not an easy and pleasant task. NXT, on the other hand, is just one hour long and is easy to catch-up with.
If we talk about the PPVs, the TakeOvers hardly cross the 3-hour mark, but the main roster PPVs easily go up to 5 hours. WrestleMania this year was longer than 7 hours and the crowd was visibly dead by the time the main event concluded. There needs to be a limit to the length of these shows.
#1 Focus on in-ring action at TakeOvers
The biggest reason why NXT TakeOvers are such huge success is the in-ring action that we get to witness on these events. Each match tries to surpass the one before it, and hardly any match disappoints. The main event does feel like the best match on the show and delivers every time.
The main roster PPVs sometimes have a tendency to focus more on the entertainment part more than the in-ring action. Also, the matches on TakeOvers get sufficient time for the two wrestlers involved to tell a story between the ring, while that is not the case with the PPVs and shows on the main roster.
A pro-wrestling show's priority should be to focus on the in-ring action as much as anything else.