We need a more integrated GoCardless experience in Zoho.
A few ideas that I've seen implemented on other bookkeeping/finance systems are,
Multiple mandates per client, Zoho can only have one GC mandate per client, but GC supports multiple.
Sync a single Zoho Customer to it's GC account. At the moment you only have the option to refresh ALL GC mandates.
Have a better connection between GoCardless and Zoho than just the company name.
Have automatic invoice payments from a primary GC mandate.