Is there any way to have a new Trezor model T use the Legacy (MEW/MyCrypto) derivation path? I want to migrate an old Ledger seed that uses this path for my wallet.
Trezor device will use whichever derivation path the PC instructs it to use. So this is an issue of the wallet software that you are using.
If you’re using Trezor Suite, i believe that changing the derivation path is not possible.
You can use MEW or MyCrypto with Trezor and you should be able to set the derivation path to what you want.