This use case is good, to lock the price if it's looking good enough so we won't need to race with other people on dumping some alts.
I've used it frequently and the only thing I don't like is the fact that we need to put our collateral money to make an order, beside from that pre market is a good way to secure money.
In addition, we do not know the exact date of the TGE and may freeze our money for a long time by depositing it to secure the transaction. I would love to use the premarket of the Gate exchange and sell my XP from DeBank there, as there is a very good price that completely satisfies me. But in this case, will have to block a large amount of money, and there is no guarantee that this deal will not be canceled after a few months, as there have been similar precedents before.