Hi Willihammer, Some interesting research you're doing here! I'm conducting some similar analysis comparing strategies for developing versus acquiring players. John B. and I exchanged a few emails and he suggested I reach out to you since you're doing some similar work. Would you be willing to email me, I could share the data I've collected and see if you might be able to make a couple suggestions as to getting a few of the missing variables. jbendi2@lsu.edu Thanks for considering! Josh