I’ve read several times that the shifter kart is a steep learning curve. I’m curious – what makes that such a steep curve? Focusing on shifting while focusing on line choice? Chassis set up?
Everything happens faster and there’s more “everything” to do. My Skip Barber instructor said the next step up from a shifter is a full Indy Car. If you think auto crossing a WRX has made you ready for the next step below an Indy car, then by all means get a shifter. ;) If, on the other hand, you suspect that you possess a somewhat lower level of skill, start in a TaG or even a 4-stroke.