Make Flux Latte and Attend Customer don't seem to be consistent about how strong the returns on extra stats are. At Barista 138, my first Flux Latte is giving me net +6632 flux including the cost of a Go To Cafe (minimal due to to Pack Mule), Collect Milk, and the cost of the action itself with only a Go To Cafe and a Collect Milk as setup actions to boost stats. My second Attend Customer is net +1608 flux after the action flux cost but nothing else even with a first Attend Customers plus some relatively minor travel and a Work and Buy City Permit for stat boosting. The tooltip formula puts a Flux Latte at +2760, not quite twice what an Attend Customer gives, but even if the Attend cost a full 1k flux (definitely false) it would still be giving less than half the benefit of the Latte.
I'm not sure whether this is a bug or just something different about how easily the actions are boosted under the hood, but it seems worth mentioning just in case.