Think that Kintzler has a decent chance to be an asset in 2019. He has been a solid reliever three years running, except for his 18 IP with the Cubs—-with a good formula traditionally: low walks combined with low homers.
In those 18 innings, too many walks and too many homers (and a .380 BABIP). But, it’s still 18 IP, a third of a season. Not nothing but preceded by mostly pretty good work.
Maybe his style is out of fashion these days with all the power relievers around but, at this point, I think you go into 2019 opening day with him on the 25-man and see whether he will regain his usual form.