Thanks for your feedback. Indeed the arena format is flawed, but we don´t have too much choices, Swiss tournaments are hardly possible with a reasonable thinking time in 1 to 1,5 hours and I think 7 rounds are less than optimal in our group of 30 players. They are better for a large player pool.
Nevertheless we should find ways of how to improve what we have.
Also in many high-level tournaments early draws are forbidden, as you know.