For those who use Thunderbird on Desktop AND on their mobile phone, filters, preferences and calendar data should be available on both devices. They should be exchangeable from desktop to mobile and visa versa.
Just like "synchronized tabs" being used in Firefox / Firefox mobile, the Firefox profile could work as a central for exchanging information not only for the Firefox browser itself but also for Thunderbird filters, other preferences of Thunderbird (desktop/app) and even calendars to use on any device?