First off, what makes a GOOD Hero, is the fact you dont listen to some other clown tell you what powers to have, so you can basically mimic him. That's not what this game is about. You do what is best suited for you.
I have Spectral Terror, and I will thrash anyone who tells me it sucks. I'll give my example... As the most dominant Arch in the game, I did the Reactor Respec. First 2 times, I forgot all about my ST, and my Flash Blinds. Didn't bother using them. We failed both times. (For one, the team of morons refused to closely defend the reactor). 5th and 6th waves relentlessy attack the reactor.
So, 3rd time, I came up with the tactical plan. Attack baddies at the doors, while I, (the Controller) terrorizes anyone who gets to close to the reactor. We ran through the respec so easily it wasn't even funny. And we were lvl 30's at best at the time. So spectral terror is great when you use it accordingly.