PvZ2 idea: Smooth out the levelling curves for the plants.

Seriously. Smoothing out the levelling up curves for more plants would be amazing. As an example, Sun Bean and Sun Shroom both get sun production increases in small steps. Every level or two on their way up to 10. Compared to that, Primal, Twin, and default Sunflower don't get any sun production upgrades until level 5 or 6. So the one thing that actually matters for them remains exactly the same until you've gotten about a thousand seed packets for them..Compared to about a hundred for Sun Shroom.