MTD registration takes up to 72 hours for HMRC to process and cannot be started close to a VAT direct debit period. It takes up time and possibly delays VAT submission.
Where a business already uses VAT Online (meaning HMRC already has its details, VAT number, UTR and verified email), why not streamline MTD registration to a tick-box that confirms the switch to MTD. Sign-in to VAT Online, accept the MTD terms and here’s your pre-approved MTD authorisation code, ready to go. Wouldn't that be less troublesome?