Could have used a lot
Gave it a 3 because you have potential.
Here's what you need to do if you develop this series.
For starters, give the characters....well....character, give them a face, features and voices that will fit each character. It's not an overwhelmingly original idea but if played right it'll be a hit.
I know it probobly wont be easy, but turn each of the veggies into a character that we can know and fall in love with. Make each one geniune and funny and I promise you'll have gold.
Good luck, hope you follow through, I'll be watching for it...