So I'm finally trying out the 20/20/0/0/30 Greatsword Shatter Build and it's... different. I'm not sure I like the feel of it. However, it has a lot smaller rampup than a Phantasm build and actually lets me burst down some people, hard. But without the sustained pressure it's kinda like old warcraft rogues. Do or die, and if you throw everything at them and they're still standing, you better gtfo or you're not going to make it.
I did the full bunker thing, and was meh. I really liked dual-sword Phantasm and how it played, and how it could be offensive but still give me the tools I needed for prolonged encounters and able to keep it up. This... I'm not sure how I feel about.