This has been on my mind for a while: if a new question is similar to an old one in meaning, but asked with far more detail and focus, should it count as a duplicate or not?
If not, should the old question (clearly not duplicate at the creation time) be marked as duplicated, left as is, or addressed otherwise?
A recent case in point:
New question - Why do propellers have less theoretical range (i.e. range ignoring impatient passengers wanting to go fast) than jets, despite greater efficiency?
It has been marked as a duplicate for:
Old question - Why don't airliners have turboprop engines instead of jet engines?.
The old question has a -2 rating and got closed. It was closed for duplicating a separate question (and not being very good), but let's leave that out of the context for now, it's just an example.
Gravedigging and editing the old question to match the new one in this case would amount to its complete replacement, and essentially result in misattribution.
What is your opinion on what our course of action should be in such cases?
I don't like dupes, but I don't like closing good questions in favor of worse ones either.