I like some cheese in my salad, but "a hint of salad in my grated cheese" is too much even for me! Now that you mention radishes, I can see an example of vegetables that really wouldn't benefit from being cooked: very thin, almost transparent slices in salads are lovely, but I dread to think what would happen if they were heated.
I've rather avoided even trying okra on the basis that my other half complains that it's too slimy. So I'm afraid I have nothing useful to add there, except that I can imagine if its consistency is a little off, pickling probably sounds like it's a good way of preparing it!
Yeah, I don't mind a little cheese in a salad. Or even egg or some kind of meat or apple or pear, or anything that goes in salads. Just as long as it's, well still a salad. I don't mind radishes sliced really thin in salads. Sometimes radishes are good for eating raw, I like it when they're sort of spicy. I dislike it if they're overly bitter. I like my coffee bitter, not radishes.

Cooked radish is unpleasant.
Ah, yes. That is the main complaint about cooked okra. I don't mind it, but like I said...due to others, I almost never get to eat it. Pickling keeps it crunchy without the slime. And I love pickles, so it's a win-win.