Thing is, I don't think it works that way. The Gambler isn't a generic +1 to anything bonus. It's best used for dangerous situations and risky endeavors. When we've used the Gambler on narrative actions that have little risk, we often see little, if any, effect. But when we use it on actions that have on-screen d100 rolls, that's when it can turn the tide. The ideal Gambler action is one where there will be exactly two d100 rolls.
Basically, the more of a gamble an action is, the more useful the Gambler side of the coin will be on that action.
The Laying the Foundations action, with 11 (or more) mages all working together over a long period of time to theorycraft, is just too divorced from an action that has only a few risky d100s for me to expect the Gambler to have more than a token effect on things, if one we notice at all.