At present, the Jays project like this:
LF 1.9 fWAR
CF 2.2 fWAR (you can add half a win though as they have Varsho with negative defense)
RF 2.6 fWAR
The team could improve the LF and RF projections by just benching Santander, as well, since a Lukes/Schneider platoon projects better than him but FGDC has Santander getting 567 PA.
Bellinger's projections range from 2.1 to 3.0 fWAR (OOPSY to FGDC).
Kyle Tucker has a composite projection of around 4.5 fWAR, about 2 full wins above Bellinger.
You can sign Kyle Tucker and then bank that notable improvement and figure out the roster shakedown later. But signing Bellinger doesn't make sense - it is quite an inefficient use of resources. You are getting a 0.5 win upgrade MAYBE and then dealing with an awkward personnel issue where Santander is in a timeshare with someone and isn't even given a true chance to rebound, or you are benching Barger, or you are platooning Okamoto from day 1 so you can play Barger.
The SP project like this:
Cease 187 IP 3.8 WAR
Gausman 185 IP 2.8 WAR
Bieber 143 IP 2.3 WAR
Yesavage 137 IP 2.1 WAR
Ponce 129 IP 2.1 WAR
Berrios 111 IP 1.2 WAR
Does Framber Valdez' 3.7 WAR projection move the needle much more for Toronto? It could make sense. SP depth charts are much more fluid and there are obvious risks on this chart (Bieber, injury; Ponce, performance; Berrios, injury and performance).
Yesavage had what, 139 total innings last year including the playoffs? They probably want to play it safe with him so we might not see much more than 150. Gausman at 35 has to be considered a huge injury risk even if he is the type to pitch through anything and pending free agency will incentivize him to do so. Berrios is kind of a complete write off for me, I would just expect slop innings since the dude's stuff is completely gone.