There is not any gain to using legacy address. However if the provider you are working with don’t aid SegWit/Bech32 withdrawals then you may want to use legacy address. Later you could transfer BTC out of your legacy addresses to SegWit that starts with bc1. TRON is often a decentralized https://gen-directory.com/listings12702836/indicators-on-tron-adress-you-should-know