PVZ 3 - Make Cherry Bomb and others both regular plants and power-ups
As of right now, Cherry Bomb, Jalapeño, and Chilly Pepper are locked as power-ups with limited uses. While I do think having power-ups is fine, many people have shared that they would like to be able to bring those plants into levels as they would a regular plant (being a seed packet and costing sun)
So the solution to this problem to satisfy all sides? Add those three plants to CYS and locked-and-loaded levels, but still have them available as power-ups for all levels. Of course, the seed packet versions of those plants would be nerfed slightly (you wouldn’t want a 6-8 sun Cherry Bomb instant-killing Gargantuars), but the power-up versions would retain the strength that they do currently to still encourage use of them. To make the seed packet and power-up versions of the plants more distinct in their power levels, the power-up versions of the plants could be rebranded to “Super Plants.” Give the Super version of Cherry Bomb or Jalapeño a menacing, electrical glow to show they can take down a Garg in one attack. (This might also make them more appealing by just making them appear stronger visually, and entice more power-up usage?)
New levels could be made and would benefit from being able to have Cherry Bomb as a regular plant, such as a level that gives you three Cherry Bomb seed packets to defeat the zombies (similar to the Squash and Tangle Kelp levels). CYS would benefit from a larger plant roster as well, and these three plants would be an easy addition as they are basically fully implemented already.
Here is a rough mock-up of these changes in the game!