I'm most scared of IF males. You never know why they might have a stroke.
ENTJs...hmm...I don't find them scary at all. But I am very much aware of their power over others like you mentioned. But I'm a maverick, so I'm not bound by the same rules they are. They need their armies, I'm a one man army though. People might respond to Te...but if Fi gives them the ability to break their shackles...they will always prefer freedom. And if they don't, it's their loss, not mine.
Yeha, I actually really love ENTJs-although every NTP I know does not. If there is ever an issue I just go head on and confront them. I lay out the issue and say "fix it". IT IS BROKEN. As long as they respect you and you pick your battles, it works very well. The two I worked for loved me...
The bad part of having any Te dom or Aux managing NTPs is that they can be highly dominating and intimidating. The worst will recognize this and use it to scare others, intimidate them into backing down, assume they "won", and then brute force their way through obstacles.
Most-not all-but most NTPs will not stand up and confront them-although I'd refer you to the ENTP revenge thread for what the ENTPs may do.

It gets soooo bad.
The real problem? For TeNi or NiTe to develop the best "vision" and then implement into an Se reality, you have to have the proper input-data. You have to understand the current reality before you can have a vision and then create a new reality. If you intimidate people enough, they are too scared to be honest anymore.
You will lack honest data, people will tell you what you want to hear, not the truth, thus your visions will be all f'ed up and will fail to become real.
Given I lack any Fe at all, and I have just enough Te to be an idealistic nutcase, me and the ENTJs get along okay in real life.