At the very least, if Smith were here for more of last season, they'd know what to expect out of him this season. They'd be able to know whether or not he is a solid option on either PP/PK, who he plays well with, who he may not play well with...
It's kind of scary that Kindl has more than 100 games of experience, considering just how low he is on the depth chart at the NHL level. People act like the dude is a great ball of potential just waiting to shine, but he has been around for 100 games and really hasn't done much of anything to impress... I guess maybe part of that is having Lidstrom, Stuart, Kronwall, and for much of the time Rafalski to compete with for more playing time... maybe this is Kindl's make or break year. He has much less name-brand competition now, so maybe he'll work his way up the ladder. Dude just has to bring it, and actually find a way to impress. I think everyone will get a shot to show what they can do on the back end. It's not so clear on the front end, unfortunately.