I'm not sure what limitations you're encountering. If you are using a third party to create the landing page templates, why can't you just plug that HTML into Marketo?Have you watc...
We use {{trigger.Referrer}} - the only issue is it gives the full URL. I supposed we could use JS to pull the data we wanted out of the string, but for now we are making due with t...
One thing that killed us in the beginning was failing to realize that any custom fields you want synced between the two systems MUST be created in SFDC.