I am joking and … not joking…
I will be explicit here and tone down my sarcasm.
I find the concept of “auto replace” both dangerous and anti-user. It teaches nothing, it only causes confusion and support. I am against building an “auto-replace” feature and think it belongs in a plugin if anything.
Not my call though.
I just don’t agree that magic substitution is a valuable feature in the first place. Building it properly now is simply an extension of censor, cause you would want to amend it so it shows up in preview. It really is a feature no customer ever asked for. (but to be fair just-in-time was never asked for by any customer as well)