Alright, I finally found time to weigh in.
I'm going to stand by Wes and Primitive on this one. Neko tech is something that is closely guarded (or at least, I think it would be) by Yamatai. It's their bread and butter, it's their muscle, it's their flavor, any faint whiff that someone else might have a slight idea about how it works...well, that thread doesn't go to far or last too long. Plus getting their Yamatai tech in your Freespacer tech is like getting their peas in your mashed potatoes. It could work, but it looks weird, tastes funny, and wouldn't you rather enjoy them both on their own? I would.
In regards, the final decision is up to Primitive on this one, but I don't think the Array would be welcoming back a member that attacked and throttled their own teammate, let alone Whisper strangling his own second in command. Whether or not is was justified, harming a teammate/co-worker/lab cohort/study buddy/blood brother is generally universally frowned upon. Failing to deliver the expected results, failing to deliver the correct results in the allotted time, spending all of the grant money, general negligence of resources, etc. these are all acceptable reasons to have your project shut down without dismissal. Aggravated assault, as you put it, is more than enough of a reason to cause an expulsion from a professional group. Cadres function a little more...aggressively if they feel like it, and some more so than others. Viridian Array is one of those "more so than others", being peacefully dismissed from the Array and it's fold (but not the Freespacers as a whole, we're family after all) would probably be getting off lightly.
I think that's about all I have to add to the conversation for now.