I'm feeling a lot of friggen repetition as we finish up Caesar. I've heard a lot of this shit before. I'm sorry Willy Shakes, but you're both long winded aaaaaand redundant.
The men in all of your plays are honorable whiners. You love ghosts, murder, and the word love.
Suicide is your thing. That is crystal clear my friend.
I feel like Acts 4 and 5 in Caesar weren't your favorite things you've ever written though. Trust me, they aren't mine either. Your battle scenes in this piece suuuuuck. This is like an epic piece of classical literature, but the details suck. The musings of men in tents aren't the juicy stuff here man. Real valor is on the battle field. Also suicide before ever entering enemy engagement is rather cowardly.
I also feel like you want us to believe all men are assholes. Brutus killed on a suspicion backed by mutinous whispers that surrounded him. The other conspirators had minimal pictures painted of what sort of men they really were, except that they were seditious followers... Except Cassius, that dude was a complete douche...and a dangerous one. Antony was on a war path. He saw that Brutus' cause was noble, buuuut his main man Caesar was dead and someone had to pay. Honestly, pretty much everyone except Antony died... really Will?

As to whether Caesar needed to be killed; I really don't think so. He was no Hitler. Actually he seems a bit like a Communist or a Socialist and Quite a few nations seem perfectly content with those ideals. (Not here in the US though, please no...politics, I digress).
This play leaves me wishing Caesar were still alive because I'm not so sure there was a Roman that could control that shit show quite like he. The Roman empire doesn't really have anyone around today for me to ask about it, sooooooo...
Actually now that I'm done ranting and I'm over my disdain for your bloated prose; it's not your fault. You were about 2/3 of the way historically accurate, but why? You were writing a great piece to influence the people of your times... surely you could improve upon the plight of these men? Surely someone could actually fight his own foes? Surely... oh forget it!