Missed the thread the last few days, so I missed all the whole #BringBackToonami movement until I saw the latest tweet come across my feed just now.
Glad I "called it" at least on some level.

But it comes down to what Paradox295 has been saying in this thread. It would have been easy to just find random Toonami bumpers and put it around the existing anime. It would have been easy to run Toonami bumpers sandwiched between an all-night Family Guy marathon. There are a million ways they could have done this lazily or turned it into an obvious joke.
But they got too many small things right. The new bumps/opens/voiceovers have been mentioned, of course. But the show selection was intelligent - a mix of Toonami's Greatest Hits with more obscure stuff and stuff that never ran on Toonami but could have. The animation/graphics they chose - the 2004-07 version - were the perfect ones. It's obvious this was done with a lot of thought and attention to detail. We didn't get an imitation or a recreation - we got the genuine article. Jokes just aren't this elaborate.
Regardless of what led to this joke or test, I don't think Adult Swim expected this kind of response. I don't think
anyone did. I mean, think about it. This is a block of mostly old shows thrown on with literally zero promotion. At midnight. On a Saturday. And the response has been so huge, so enthusiastic, that four days later a revived Toonami isn't just possible, it's likely. Four days. That's incredible. And it shows that the demand for Toonami isn't just amongst the hardcore.
As for what form it should take, I'm with Karl here. Midnight to 6 on Saturdays, mix the existing premieres with Toonami classics, and go from there. If the ratings are strong enough to warrant expanding beyond that, Running it during Cartoon Network hours is out of the question. Their target audience is narrower, their programming strategy is different than it was in 2000. That's what led to its cancellation in the first place - they wanted to go younger and Toonami kept skewing older. That's why we had the TOM 4 redesign. I only saw bits and pieces of that, but I dove into TDA to see what it looked like and, well, yikes. All the things that made Toonami, well, Toonami were gone. And judging from what I've heard/read about that period, cancellation was more of a mercy killing at that point.
Toonami is now an Adult Swim property. I think that's a good thing.