I partially disagree with IceGod. Essentials was made to isn't necessary for knowing scripting to make a Pokémon simple game. Not everyone is good at scripting, some people is good at Pixel Art, others at music, etc... But, I think that is necessary to know very basic things like "if/else" and "while".
If you like customized things (unlike some basic ones), so or you find some scripter to team up, or learn by yourself.
Anyway, I suggest to Maruno add this Luka S.J. script to default Essentials.