You are trying to be way too crazy here.
Both were smallish players. Omar Vizquel was a game changing defender at SS. All reports are that Nick Madrigal has that ability at 2B. Omar was an ideal #2 hitter between Kenny Lofton and Robbie Alomar who could do just about anything with his bat to win a game. I think Nick is also going to be that type of hitter, with a similar amount of power, speed, and SBs. Omar took a walk around every 10 to 12 PAs, and Madrigal put up a similar number in college. If you still a solid lead off hitter in front of him, and a good power hitter behind him, I am feeling pretty confident with his baseball IQ, that the walks will come at a minimum of a similar rate, if not more.
This is totally on the assumption that due to physical limitations that Nicky doesn't gain a ton of power in his game. All bets are off if he can find the same weight room as a Jose Altuve found in about 2015. Speaking of Altuve, if you look at the first four seasons of his career, that might be another solid bat comp for Nick.