It is very convenient when you can trade more against the dollar. Not only buy for Bitcoin or other coins, but you can deposit your dollars and trade to the real price. It is very convenient.
Maybe the team will consider to add dollars once the platform is ready for trading. We just have to keep being in here so that all our suggestions and thoughts will give them more ideas inorder for this to be like by many crypto traders.
They will not add the real dollar because that requires special license to operate in country where their office exists, even the biggest exchanges are not capable of doing that except Coinbase and some other names who offer it only for US citizens. USD is usually refers to Tether and you will be able to buy and sell bitcoins like you do on other exchanges using Tether.
It's definitely true, dollars requires a lot of legality and I think this is something that makes it more complicated to do. It's more likely USDT which you already mentioned and I think everyone already knows about it.
Yep, it's Tether, because they have established connections to 12 major exchanges who are using Tether, So the high liquidity that we are seeing now even though the platform is not yet live, is coming from those exchanges through some kinda privileges API.