Could someone sell me on why I should switch to this from regular Vim?
Now, pretty much any programmer can read a lua program, and it takes about an hour to learn, whereas I think the most flattering honest word anybody has ever used to describe vimcsript as is 'pathological'.
For the second kind of person, vimscript is like some combination between russian roulette and vogon poetry, bomb defusal and surreal nightmare. For the first kind of people - I don't know, there are probably some upsides, but honestly, who does that? Do you? That's what you have to ask yourself.
And more, if you're not that kind of person today, do you want to become that person?