Alright. I'm going to contribute some thoughts that I've gathered up.
Yep, duels are gonna be a lot faster. But consider Wizard vs. Wizard duels. They both have four focuses. And with the increased speed, you might as well focus-bomb each other since it's possible you might end up with unused focuses if you don't. Sure, not every focus is going to hit, but that kind of pressure is present right now. There is potential for some ridiculous stuff, but I don't presently know if things are as crazy as they seem. We won't know until public playtesting, because due to how crazy this looks, I actually don't want people fighting at Wizard for the ART. I have a proposed situation for if Wizard vs. Wizard is really as crazy as it seems, and it's basically to knock out one of the ranks, dropping Mage to 15 WoL and capping focuses at 3, which strikes me as a more reasonable number that will cause people to put more thought into their focus placement. If we do that, Magician will be the one to go since it doesn't sound fighterly.
Focus-bombing though, is probably not super effective as it might look. The actual likelihood of someone going 6-0 or even 4.5-0 completely unanswered and unblocked is, well, really low. Not every focus is going to hit; they're most likely going to get blocked at some point, and even without that, there are situations where attacks earn half points. And then you're out of focuses. Your opponent still has theirs, and they will most likely use theirs more intelligently, at points where they count more.
Eating a focused attack for 1.5 might feel overwhelming to some, but I don't think it's particularly more effective than attacking and ducking into a defense the very next round. It condenses what might transpire over two rounds into one, and it's certainly not insurmountable, especially if you have a focus yourself and can place it right. Don't get discouraged.
I noticed that some people are actually in favor of falling back to fancies if this falls through. That's not a bad idea. And it's actually still relevant to attacks; consider the implementation of fancies. They turn half points into full points. And DoM has situations where attacks earn half points. You could use fancies as insurance for attacks that could earn half points. But we can cross that bridge if we come to it.
We have gotten in touch with our FlashChat modification wizard!

We will soon have our checkbox, which will allow us to playtest much easier. After the ART, I'll make a new release of Arbiter for the RDI DoM shift, and once all those pieces are in place and we have some opinions on the Focus ART, we can start public playtesting.