It has become routine practice for the St Louis Blues to juggle their lines at the slightest hint of trouble. Seemingly never giving their forwards a chance to generate any kind of chemistry with one another. With the return of Jaden Schwartz Hitch needs to give the top line of Paul Stastny, Vladimir Tarasenko, and Schwartz time to work out the kinks instead of bailing on them before giving them a chance.
It is a well known fact that most NHL teams substitute players every once and awhile to generate offense in the closing seconds of a game or throw out a purely defensive line to secure a lead.