Its absence was a little conspicuous, admittedly, but it might be an issue of waiting to gauge interest in the event to see if it's worth it? (I wondered if it was an issue of space, and they weren't planning on opening that back section of the park?)
I'm wondering if it's an issue with the COVID logistics as it pertains to loose articles? Combine with the lower capacity—they don't need to separate rows on Dominator, going by the standard set by BGW with Apollo's/Griffin not needing to leave empty rows—maybe it just isn't worth the hassle of trying to operate within the restrictions.
The new EO doesn't require 6 feet of separation on the ride so they could have TT go every row if lines are going to be an issue. They could also do timed passes if they decide to go every other row to manage the queue.
The other alternative is to go with Racer 75 which opens up a lot more capacity if they go with 2 of every 3 rows filled per car and both sides running.