Looking good. Would make the main a 3-day event, assuming 2500 entries and 20k startstack and a total of 150bb in play when it finishes (on the optimistic side for duration) it'll take up to level 45 to complete. With about 33 minutes per level if you count breaks (again on the optimistic side, especially early breaks tend to be closer to 10 minutes), that's a total of about 25 hours. For an mtt that starts at 8:30pm playing 8-9 hours sounds a lot better than 12 and might actually make the difference for some people, for example me
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Re-entry will just be softer in 2-7, not sure why you're complaining Tooraretodie. Structure is deep enough that having to rebuy is not that common unless you really gamble it up. Even if you intend not to rebuy if you bust you should still not care whether it's re-entry or not, imo.