Winona's "Greater Generator I, II and III"

[Master_NiX]

I feel like this talent, shouldn't be just a magical "boom, you're more powerful now" button.
Some would think that it would "fix" non-existent problem, but then again Winona's current buff from those talents stays working even when you switch character with no indication of difference for said generator. So, you could technically place normal Generator with those 3 talents, put Spotlight with activated talents as well, switch character and boom, you got very cheap and lasting light source, especially since everyone can feed nitre into it.

Instead of passive "efficiency" I believe it should be upgradeable instead.
Kinda like Dispenser in Team Fortress 2... come to think of it, portability is very similar to it.
Even if person would have need to switch, the upgrade system might feel a bit more rewarding.