I just realized that fedi already has all the infrastructure for "starter packs": We'd just need to create CSV files to be used with the follow import feature.
@GoodNewsGreyShoes It is actually pretty easy - the format for the follow import list is a plain text file. Akkoma exports it as one account per line, listed like an email address. While this isn't the exact same format as Mastodon, it has so far always worked to import the Akkoma export on a Mastodon instance.
I'm surprised nobody has done it yet, honestly. Creating plain text files in the needed format isn't particularly difficult and could even be done with a simple text editor app on a phone.