Would be great to set a MessagingServiceSid rather than a phone number ot not have to worry about which number when sending sms around the world etc

Currently, the Smstools primarily supports using specific phone numbers linked to your account for sending SMS messages. If you want to centralize number management or simplify handling international SMS, you would typically integrate with services like Twilio using their MessagingServiceSid. This can help manage sender identities and route messages more effectively without specifying each individual number..