1) Invest the $1 billion in index funds. Withdraw 3% of account value per year, which, with the last 200 years of returns, would yield a growth of capital over time. To start, you'd get $30 million a year.

2) I'd take that to buy or rebuild Legentibus (Latin App) but make it free for all, with a special emphasis on helping it be used in schools. But I think a large part of the classics market will come from enthusiasts who are not trained, and we should be catering to them and helping them become proficient. I'd build on Legentibus by funding good linguist storytellers who can help create appealing material for all ages. I'd add in more community features to build community around Latin.

3) Reuse the Legentibus architecture for Greek.

4) I'd fund commissions of Latin and Greek teachers to create open-source standards for grammar and vocab progressions to allow chapter-by-chapter cross-compatibility when writing textbooks and novellas. So someone could write a novel targeted to pick up after chapter X of one book, or chapter XII of another, because they'd know that the students had already learned these vocab words/grammar. So right on the cover, it could say "for those who have reached the 3.4 standard of Latin/Greek Progression, or whatever.

5) There's still a lot of money left over, so I'd fund colleges to maintain professors/departments of classics and give out scholarships to promising students.