I think I might have to avoid exchanges that has the hidden order feature because it just makes me very scared and I don't want to enter a market and in the next minute seeing myself losing a lot of coins because I never knee that a whale somewhere placed an hidden sell order to dump coin.
Lol, if there is a market movement on any exchange, with or without hidden orders other exchanges will follow price wise.
Hidden orders reduce price slippage, you should use an exchange that supports hidden orders.
You need to know that hidden orders lose in order priority, always pay taker fee even if the order is a maker, and have other disadvantages compared to visible orders.