151-Mode

What do people think about games having a toggle for a 151 mode in Pokemon games?

I haven't bought or played any Pokemon games since Red, I recently gave a few of the newer games a try and realized I can't bring myself to care about them because I don't know who any of the Pokemon are apart from the OG ones. Would love to be able to enjoy the newer games, but with the 151 Pokemon I knew and loved.