Event 13 - 06:00: $215 PL Omaha H/L [6-Max, 1R1A]
Event 29 - 06:00: $265 NL Omaha H/L [6-Max, Knockout]
Event 36 - 14:00: $530 FL Omaha H/L
Event 51 - 14:00: $320 PL Omaha H/L
Event 57 - 17:00: $215 NL Omaha H/L [Ante Up]
From an Omaha 8 player's perspective, I think it's kinda out of the blue that you would introduce the Ante Up as a format of choice to represent NLO8 at WCOOP.
While this tournament has been gaining popularity + exposure by being a WSOP event in NLHoldem, I don't think there is nearly as enough NLO8 games that run in this format. Before Black Friday, there used to be 5-6 NLO8 Ante ups running and after the schedule was revamped (still Pre-Black Friday), 2-3 of them were removed and the result was 3 of these tournaments as part of the tournament schedule. As of this date, the 3 remain in the schedule and do not attract near the number of runners a freezeout or rebuy would attract.
In my opinion, the better way would be to run a 6-max and a 9-max NLO8 with one of them being a rebuy/second chance event. If you think KOs and 6-max are better together, then make the 9-max a 2x chance.
Alternatively, you could make the 9-max a KO and have the 6-max as an unlimited rebuy event.
I trust the decision making ability of your team, please change the Ante up NLO8 event.