I think Sandberg would have been a good choice for the Cubs, I have followed his career since he came in, one of my favorite players. If you want to know what kind of coach he would have been, just read or watch his HOF speech, here is a portion of his speech:
"These guys sitting up here did not pave the way for the rest of us so that players could swing for the fences every time up and forget how to move a runner over to third. It’s disrespectful to them, to you, and to the game of baseball that we all played growing up.
Respect.
A lot of people say this honor validates my career, but I didn’t work hard for validation. I didn’t play the game right because I saw a reward at the end of the tunnel. I played it right because that’s what you’re supposed to do -- play it right and with respect. If this validates anything, it’s that learning how to bunt and hit and run and turning two is more important than knowing where to find the little red light at the dug out camera."
I don't think with him as a manager, he would have put up with a shortstop turning his back in the middle of a pitch or a 1rst baseman complaining about where he is placed in the batting order. He also would not have tolerated the lack of basic fundamentals of the game that has been plaguing this team for the last couple of years.