One negative that comes to mind is the lack of long term booking that seems to plague the company nowadays. Though it might seem hard to believe based on todays product, but back in the day they would plan shows 6 months ahead or sometimes a year out. However, now it is clear that the WWE goes week to week or sometimes even day to day with plans never really planning that far ahead. Considering the booking of Jinder Mahal this year and his interesting title win it is pretty clear that they don't plan ahead like they use to. Truth be told yes the booking of Braun Strowman may show the opposite but did it really show the opposite.
Fact is long term planning or even just having a rough idea of where you'll be going in the future allows it to seem more real in my opinion. Because giving the talent a heads up that they will be working with each other a few months in advance could give them the opportunity to start planning things out ahead of time. Once again let me point to the idea that talent use to say that they would work with someone ahead of a feud on house shows. For example, Kevin Nash mentioned that the reason a lot of matches looked good at the time was due to the fact that talent would work together for months on a house show ahead of them feuding. Even though I don't know for sure it seems to me that talent don't work together on house shows until they start feuding on TV.
This is a problem due to the fact that talent have to start a feud at square one instead of having an idea of where they are going before the feud kicked off. Also working together on the house show ahead of a feud it allowed the wrestlers to focus on getting the feud over instead of the feud & in-ring stuff as this is how things are when they just kick off a feud on TV. Though it might be a little complicated the underlying idea is that long term booking matters & is a major negative of todays WWE.