Re an autorouter, you can still export a file for an external autorouter, the one that was included in the older versions had some licensing issues and was removed from being included in the distribution, but I've personally never used it.
Been using kicad for small scale production for the past 3 years, so I would say it is certainly usable for business purposes, Its still growing, and there are still a number of things left to polish, but most of the major ones are being addressed with V6, and there is not much preventing workarounds at the moment, (Copper arcs that are assigned to nets is growing to be a more important one for me)