I'm a big fan of this new idea!
Did you consider any of the prep shortstops for your list? JP Crawford, Oscar Mercado, Jan Hernandez and Chris Rivera have all been mentioned on various first round lists, though they each have significant fielding or hitting questions. If they are able to put it all together in the spring, they may move up quickly.
I'm looking forward to following your updates throughout the spring.
To my knowledge, the Twins view Mercado and Crawford as 1st rounders. Mercado may be more likely to stick at SS. A team that believes in Crawford at SS will take him before the Twins select in the 2nd round. Hernandez's draft stock will change until the Excellence Tournament. Don't have a great feel on Rivera yet.
Obviously opinions can change daily.