I strongly resist this, because then we don’t have a word that means “literally.” If someone actually, literally died, how do you say so?
I suppose one could try to argue that there are two separate verbs “to hang” that have different past tenses/participles; but it’s probably not a particularly useful distinction.
Once in a while, using “whom” makes a sentence clearer. I’ve seen examples of this, but I can’t think of any right now.
This is one where it really helps to know about transitive vs. intransitive verbs.
A couple I’d add to your list:
Phenomenon/Phenomena
Criterion/Criteria
In each case, the second word is the plural of the first.
May/Might
This one’s tricky. I often see people use “may” where I think “might” would be more appropriate. Years ago I started a thread asking about this.