Make Proclaim adjust the font size of all songs in a service instead of just one

Right now Proclaim sets the font size of a particular song based on the longest line of the song. I understand the thinking behind that. But what happens is every song in a service will have a different font size, which is a little annoying. Would it be possible for Proclaim to automatically adjust the font size of every song in the service based on the longest line of the service? Then everything would be consistent.