Instead of creating a bunch of identical TNT files, you might try this:
1. Set all of your preferred settings for the app (color, font, size, but excluding username and hostname) Then on the options/global tab, choose 'save all current settings as application global default'
2. Create an html page with your username/hostname combinations reformatted as links like this:
"ssh:
username@servername.domain"
Then, you can use the html page to easily launch the app and jump to any server.
Does this help?