When do you think the next Nintendo Direct is and what will they show in it? I think September,some smaller Wii U games for Xmas and then NX reveal and laucnh window games.

They really need to let people know what the NX will be by September/October. Anything later and we'll have the next Wii U.

It better be appealing as hell, and dirt simple to understand the appeal of this new console or we are already far beyond worrying about even Wii U level sales.

I wouldn't be surprised if it was just the NX Direct in September with nothing else before then.

NX Direct in September would be my guess.

NX Direct in October

we already do.

Nintendo learned nothing from the wii u. They just prooved that this and last year. NX wont change anythings.

Games like mario tennis ultra smash, animal crossing amiibo festival, mario&sonic rio 2016, Star fox zero, Paper Mario CS showed us that nintendo still dont make the games their community want. Nothing will change with NX.

let's be crazy. what if they use Gamescom for NX?

The only two that have any validity of what you listed are Star Fox and Paper Mario. Star Fox was a case of developer overconfidence and the choice not to implement regular controls, and Paper Mario by every metric has been a case of Nintendo legitimately just best stupid to the fact that this isn't what we want out of PM. The others you listed are video games being released so the system has video games. There's nothing particularly wrong with any of them, Amiibo Festival's terrible gimmick aside. 

People who generalize Nintendo as a company like you did above need to realize that Nintendo isn't one guy. The influence of Iwata is still taking shape in every game they've released since his death. Kimishima's influence is effectively only going to be on NX marketing; even the NX itself is a response to the Wii U's failure, not a new creation headed by Kimishima's vision. That will be the case essentially for the entire lifetime of the system, with his direct influence dimming steadily as the projects started in 2015 are steadily released. 

Nintendo shouldn't wait for a new Direct to unveil new hardware. I definitely think there needs to be some sort of event so people and media can get their hands on it. Or NX is dead out the gate. We have to know what kind of games are coming, we have to know what the NX is, the media has to know specs, price, etc. and time is winding down. A NX centric event can come out no later than September. The NX is slated for a march release after all. If they're going to delay that too, God help Nintendo.