To be honest, I am just using the Tron network when I want to transfer USDT between exchanges since it is cheap for withdrawal fee, besides that, I don't find any good thing uses of Tron.
But now there is already a lot of alternatives with Tron for transferring stable coins like USDT. Like Solana ecosystem which is they have already USDC/USDT SPL, which is you can receive USDC/USDT using the Solana ecosystem. There are still few exchanges using this, which I find quite a good alternative for USDT/USDC besides the Tron network.