The Jays don't really have a true cleanup hitter right now if Santander is hitting 3rd.
Springer will likely get the chance for the first couple weeks and if he sucks and the underlying metrics are bad, they'll have to move him.
Against certain RHP Gimenez leading off makes some sense, which would put Bo in cleanup, which isn't terrible, but it would be really nice if a guy like Varsho could dial in that power stroke more often, or Barger. Having Gimenez, Vlad, Santander, Bo, Varsho/Barger against RHP would be a handful to deal with.