Could Level Themes Have More of a Shake-Up?

In the current build of PvZ3: Evolved, there are a total of four level themes: The Suburbs, the Campsite (formerly Lost Keys Lake), the Volcano (formerly Mt. Quesogrande), and the Sewers. Each level besides Suburbs have a Primary gimmick appearing in most of their theme's levels, and sometimes a secondary gimmick appearing occasionally. I'm not talking about Conditions or anything like that, I mean: Water tiles in the Campsite, Fumaroles and Cheese Blocks in the Volcano, and Shade tiles in the Sewers. Coming up with new level themes with their own primary gimmick is not going to be easy, so why not mix-n'-match? Some gimmicks could now be shared across level themes, usually as secondary ones. 

Remember the Smoke/Smog that used to be in the Volcano theme in earlier builds? It was eerily similar to the Fog stage's main gimmick from the original PvZ, which also had Pool tiles, functionally the same as Water tiles in the Campsite theme. So why not give both the Campsite and Volcano themes the Fog as secondary gimmicks? Plantern could make a nice return (maybe as a Tier 2 Plant merge). Additionally, Water tiles do seem to belong in the Sewers theme, so it'll have that as a secondary gimmick while the Campsite has it as its primary one.

One more thing to note: Anyone remember the Vase Breaker minigame from PvZ? It would be very nice to see Vases return as a level gimmick, where your Plants break them like Gravestones, and once broken, out pops a surprise, either some random Zombie or any Plant, and Plantern can of course reveal its contents.