Please support having sub-accounts within the same account.
My use case is multiple algos where I can track the holdings/positions/orders separately without having to do the whole shenanigans on my own.
Initially you can do just cash, then extend it (if you like) to MTF and other types too.
Others might benefit by using it for their own strategies. It can also help manage funds separately. Some brokers like Interactive Brokers already do it.
I am surprised this has never been suggested. I can imagine it might be the biggest USP for the platform as it will attract other users who currently have to juggle multiple accounts across different brokers.