They go in and out of stock all the time. I would not read into it too much.

It would be a bad business decision IMO to bring out a new version. The current one sells and there is nothing better out. They would only cut into their own sales and not the market. I would work on a design but not bring it out until their sales of the current model slow. Molds for injection molding are crazy expensive right now too.

Now a "new" model that had the thicker arms and all the lightened parts as a team version would be a good idea.

What would you change? I would like to see a beefier motor mount (bent two now) and better carriers/retainers for the anti sway bars. But really the car is both nimble and easy to drive and few kits are both.