My assumption would be that it would be like trying to freeze a dinner salad dressed with say...Ranch dressing. Hmm.....I don't think I would want to eat that after it thawed.

No, but you can extend the life by storing the dressing and vegetable components separately and mixing on demand.

I wouldn't either. I think the dressing would separate & the vegetables would be very limp...

I wouldn't advise it.

I wouldn't. The texture would be yucky once thawed.