Both of these functions are interesting in their own way. I dont even know which one is more important. It seems to me that the implementation of even one of them is able to make the project a success!
I hope the team implements all the scheduled options. If all functions work properly, it will make the exchange of IEX very popular among users.
Each exchanger must have its own characteristics, since you need to stand out among the crowd of competitors, and this is important