□ Easy to set up.
□ You can make a text appear when the countdown ends or switch to a new scene which is great because it allows you to make "mini macros" especially if you create several countdowns.
□ Indeed, you can duplicate the .lua file.
In short, this is my favourite countdown plug-in. The only con I see is that I wish I could insert an end text after the countdown but it's not a big deal actually.