Study Hard

[Sneaky]

I would personally find the ability to have multiple lessons going for the same skill useful. I am not asking for stacked multipliers for each lesson, but for stacked duration. One lesson slot would give double gains for 5 points, two would give double for 10 points, and 3 would give gains for 15.
I'd absolutely love the ability to purchase as many as you want, but you might run into people paying for hundreds of lessons early on because they're cheaper. I don't think the cost between 15 points is too much to have it also as an added benefit to getting stacked lessons.
Thanks for reading.