So, despite the timing setbacks, I think this round of IsoDom was successful. Next time around we'll do better with setting time limits, which I think will end up being longer than a week so that we don't end up backed up (or I will use something other than Challonge to determine pairings, instead of just dropping people).
However... all this assumes that IsoDom can continue.
I'm reluctant to start another IsoDom at this time. Let's assume the next one will take about three months. That means we run into the holidays, which is not a problem in itself, but I have a hard time believing Goko will not re-launch before the end of the year. Early indications are suggesting launch near Essen, so mid-October. Hopefully their second launch will go more smoothly, though I still consider what they have to be an early-beta product, not late-beta.
Dominion on Goko is only partially tournament-ready. Random matches are available, which is great. However, only about two-thirds of the cards are available--something which everyone knows I consider a gigantic flaw. Of course, there is no timeline for when they will be added; I frankly don't expect them before the end of the year. I am loath to run a tournament without Alchemy, Cornucopia, or Hinterlands available. And even then there's no guarantee everyone will have all the expansions, though the hardcore tournament-style players likely will.
So it feels to me as though IsoDom will be going on hiatus until well after the Goko launch. I hope that, once Goko is running, has all the cards, and is stable, I will go ahead and start a GokoDom tournament series, if people are still interested at that time.