The gladiator arena is a promising and certainly inventive replacement for the epic arena. BUT the 3 pm to 11 pm (PDT) that it is closed is terrible. This means that no one on the mainland USA can play in the evening hours after work (or school) and before going to bed. These are the worst 8 hours you can choose.
It is also worse than EArena because the payout stops during these eight hours. Please consider continuing payout during this time. It only makes it more difficult for players to advance by decreasing the payout by one-third.
The other area that was changed is the Goblin Peddler. I have gotten it three times since the update, which is probably two more than before. That part is good. What is BAD is that almost every item now requires diamonds and not gold for purchases. Of the three times, only one item was purchasable with gold. Twice every item required diamonds to make a purchase. Again, this is a change for the worse for players.
Please consider making changes in these areas to make it more player friendly. Thanks.