I know we have tempo for billing but it would be nice to have other and more specific portal payment integrations like Stripe, Square etc. 

I use Atlassian for MSP purposes and it would be nice to allow my customers to come to the portal and submit a ticket but also make payment and not have to go to another place to make payments. 

I don't know if this is on the road map but to make Atlassian/ Jira Service Desk more usable for all businesses this would be very helpful.