I wouldn't expect anything major to change until after Summerslam, and even then that seems very optimistic.
You've sold tickets based on those matches. You've got talent with assurances and promises revolving around their booking, etc etc. I saw someone else say WWE is a very big ship, and it's going to take a long time to turn it.
You still have RAW and Smackdown being written by the same people (even if a different person now has final say). You've still got Dunn. Etc.
There'll be stuff where there's an obvious shift, like commentary, even if that just comes down to certain words Vince banned now being allowed. I remember even Cole being a lot more tolerable without Vince in his ear, for instance.
If Trips didn't order a complete rewrite of the show the afternoon of the taping... that's actually a positive change even if it won't immediately translate to better content on the screen.