You're correct! They only work in sequences and broadcasts right now. Great idea!
In ConvertKit you can ask and answer questions and share your experience with others!
Hey @Medea Bindewald2! The first name shortcode will work in the body of the incentive email; it's only the subject line of the incentive email where it doesn't work right now :)
As for the incentive email font — currently incentive emails will all use your account's default email template, so if you change the font for that template, it'll apply to your incentive emails, as well. (But I totally agree it would be nice to be able to format the incentive emails independently of your account's default template!)