Unified trading accounts vs traditional accounts

This one's for my fellow derivative traders only. If you're not into derivatives, please skip this post. So, some exchanges are starting to offer unified trading accounts. This allows users to trade both bitcoin and altcoins while opening positions with USDT, USDC, or other stable coins, rather than just relying on stable coins. I’m not talking about Coin-M here, but rather stable coin margins alongside the bitcoin and altcoins you already have on the exchange. Plus, there's no need to shuffle coins between your spot and futures/derivative accounts since it’s all in one place. I know of two exchanges that have already made this shift, and another one mentioned they’re planning to do it. But it seems like a lot of exchanges haven’t caught on yet. Do you guys think it’s a must for exchanges to adopt unified trading accounts as an option?