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One of the few things I learned in high school - isolating subjects/objects.

I don’t say, “Me wen’ to de can’y staw onna cawna”. Ergo, I don’t say, “Me an’ my brudda wen’ to de can’y staw onna cawna.”

You wouldn’t say, presumably, “Lady Ticklebottom invited I down for a weekend of grouse shooting”, so why, oh why (I weep), my otherwise learned friend, must you say “Lady Ticklebottom invited my wife and I down for a weekend of grouse shooting”?

What do you think about the following?

If you were I, you would do the same.
You could wave a magic wand and become I.

Thanks. You probably have a deeper point (out of my depth), but on a basic level, I’d say the first is correct and the second not.
Then again, ‘to be’ taking the subjective seems to be on the way out.
“Language is what people say, not what I say.”

If you were I, you would do the same.
You could wave a magic wand and become I.

Yes, the second one is odd. 'Become' (in the sense of 'come to be') is a linking verb (copula), so grammatically it should be followed by the subjective case 'I', but that doesn't look right at all!

Interesting. Now I have a new way to be annoying.