I’m not sure it would have that much of an impact when you factor in all trip costs.
My Pinburgh trip expenses are:
Flight - $250
Parking at the airport - $50
Hotel (split 4 ways) - $175
Breakfast at place that will not be named - $20 X 3
Lunch at place that will not be named - $20 X 3
Dinner at place that will not be named - $20 X 3
Replay FX fee - $100
Uber to/from airport - $60
Current Pinburgh fee -$120
740 bottles of water - $2 . . . then free refills from the water fountain
TOTAL EXPENSES = $937
Raising the Pinburgh fee to $250 ($130 increase) is a whopping 14% increase on my total travel costs (not something I would consider a deal breaker).
It may impact those more local to Pittsburgh where the tournament fee is a larger percentage of their total travel costs, but for anyone flying in I can’t imagine those people not being ready to sign up at 12pm EST regardless of the entry fee costs. YMMV . . . mileage being a pretty big factor here