So should we never introduce new engines ever again since the new price is higher than a used engine of another brand? Give it a year and you will see used KA packages for half off retail.
Also, X30 is too much for some people. There's a reason my dad got the Leopard and then decided to get rid of it and go to an LO206 for his first kart. The Leopard was too much for him, for a completely green newcomer to racing. The LO206 will probably be too slow for him after a season. You gotta remember James, not everyone has been driving for 20 years and grew up around FA engines!
There needs to be a middle-ground from LO206 to X30. This WAS Yamaha at the national level. But Yamaha died out at the national level. So there needs to be a replacement. Komet would've served that purpose well but that already failed for a number of reasons as well (not all related to the engine package itself). This thing is basically a Komet with a starter on it and reeds, so I'm not sure why people are so sure of the Komet but so unsure of the KA.
You also have to keep in mind the competitive environment of X30 vs. KA. I guarantee you, even if both fields had the same amount of drivers, the carnage of KA will be lower than X30. You're going to see a different style of racing in KA because it's serving a slightly different market of drivers.
The potential advantages are engine longevity, parity, and ease of operating. We will see how the longevity plays out in the real world.
I will be sure to write an on-going full review of the engine and track my maintenance schedule as the season goes on.