If they reboot TNG I hope they are a little bit bolder and drop some characters, the Abrams universe movies for example didn't really need McCoy, Scotty, Sulu and Chekov. The focus was on Kirk and Spock with Uhura getting attention because she's Spock's girlfriend.
The other four were included because they're part of the crew, not because they were needed.
For TNG they should use Picard and Data, arguably the most well known and popular characters. I would also include Riker and Troi, a potential movie would most likely include a romance so those two are the obvious choice, it also need a female and despite the show often not using her effectively Troi has the most potential, focus on her as a first contact specialist and an advisor for the captain for example.
The others are unnecessary, Tasha and Worf would be used primarily for action scenes, give those parts to Riker. Geordi is unnecessary both as a pilot (an extra saying "yes, sir" is enough) and a chief engineer, because the movie will have to create an engineering problem to give him something to do. If something needs fixing show extras running around in the background fixing things, don't have a character spout technobabble.
The same is true for Crusher, a doctor isn't necessary most of the time, her personal relationship with Picard was interesting but parts of that can be absorbed by Troi (the talks ans trust, not the potemtial romance).
Wesley? No, just no. Completely pointless.
A small group of core characters is best, primarily because every movie would also feature antagonists, people that the crew helps etc., those are more necessary than a large core cast.