lots of great suggestions from other posters:

My vote is for:

Seed button: trash or harvest
Nursery: more animated items to pass the time and rare, very exotic customer eating plants that have to be kept in cages; ability to customize nursery while waiting for the sale
Seed tray: stackable trays sound good; with the option for player to customize the section by color or label to track the seeds
TIME OUT BUTTON: to quickly stop time when interrupted by family members
MORE BUGS, SPIDERS, CENTIPEDES, LIZARDS, ETC
SCISSORS: agree need to be far away from the net
MINI-FLORIST STAND: ability to trim excess flowers for a quick buck.
More Magic Plants: like some rare plants that have to eat certain bugs you catch
other than that the game is great: LOL