Gillaspie is probably ready enough. Ideally he'd get 1/2 season more in AAA first, but he has spent ~1/2 year there already with very good results. He's probably an upgrade right now, straight up.
Correa is STILL only 22 and has 135 and 122 wRC+ seasons under his belt. I kind of think you take him over Bryant, whether it's dynasty fantasy or real life. Redraft would be Bryant.
I really like the message it sends, but I wonder if it might have been better to wait and see if it ended up affecting the matchup before penalizing such a high pick.