I dunno, I think Death Watch are pretty badass. I do agree the Mandalorians as a society on Mandalore are pretty weaksauce. But Death Watch are awesome.
Death Watch are pretty crazy. Though I agree that the Mandalorians in the show are, practically in the common sense, weak. Jango Fett was a true Mandalorian, even if one of the characters in the show said he wasn't. It would be interesting to see Boba try to fight Death Watch in the next season just as his father did in the Expanded Universe.
The Jedi aren't the ones that destroy and depopulate entire planets just to make a point. And as far as I understand, nobody is forced to train as a Jedi, they can quit any time. And with a few exceptions, most Jedi that actually do cause problems have turned away from their Order's ideals.
Nevertheless, the Republic they serve is corrupt and their Order follow evil ideals. The Jedi code is inherently evil, because it asks of it's followers that they be less than human, that they sacrifice in their own lives all of the aspects that make those lives worth living, to the point that the last line of their code becomes sad prophecy. There truly is no death for a Jedi, because before something can die, it must first live, and for the Jedi there is no life, only the force. An order dedicated to the eradication of the soul and opposed to individual idea? is not good.
The ideal of the Jedi is essentially to be soulless droids. A Jedi is not allowed to know love, the greatest motivator and purpose of life, the Jedi is not allowed anger, even when anger is called for, the Jedi is not allowed grief, no matter how great the loss, the Jedi is not allowed fear, even though fear leads to self-preservation. The Jedi is not allowed humanity, in the philosophical sense, though supposedly his goal is to preserve? it.
As for destroying planets, let it be clear that Alderaan was indeed a planet full of rebels led by Bail Organa. In "Rise of Darth Vader" by James Luceno, most of the population strikes out against the Empire in various riots.
The destruction of the planet is often consider as ipso facto proof of the Empire's "evil" because it appears as mass murder--planeticide, even. When Tarkin prepares to fire the Death Star, Leia begs him to spare the planet, saying that it's peaceful and they have no weapons. While her beg is important, how do we know it's even true? While I always make posts like these, this can be justified.
The audience has no reason to actually believe that Leia is telling the truth. In the first Star Wars movie, a New Hope, every bit of information she gives the Empire is untrue and practically false. In the beginning scene, she tells Darth Vader that she is on a diplomatic mission of mercy, while it's proven she is on a spy mission, trying to deliver schematics of the Death Star to the Rebel Alliance(A Terrotist organizqtion by the way. Made to destroy a government that is in power). When asked where the Alliance is headquartered, she lies once more.
Her lies are justified--she imagines herself serving the "greater good"--but they make her wholly unreliable on the question of whether or not Alderaan really is peaceful and defenseless. If anything, since Leia is a high-ranking member of the rebellion and the princess of Alderaan, it would be reasonable to suspect that Alderaan is a front for Rebel activity or at least home to many more spies and insurgents like herself.
And it all comes down to a point of view, I can quote many Sith who view the Jedi as the "bad guys" and obviously some of the Jedi who see the Dark Side as evil or malignant. The "Revenge of the Sith" movie shows the deception of the Sith and the destruction of the Jedi. Is killing children evil? Most would say. But for any Star Wars fan, they would know that the Republic attacked the Sith in the ancient days, destroying the landmarks in Korriban and killing Sith warriors and citizens alike, this was very near to genocide.