Using a jumper wire in the clutch switch tricks the bike into thinking it’s always in (purpose being it defeats the speed/rpm check). This is why it will start in gear. Leaving the switch open (no jumper, removal, or even not pulling the level), you are correct, the bike will not start except in neutral.Wouldn't taking the clutch switch out mean that you can only start the bike in neutral? That's how it was on my R3. I left it as on my 400 for convenience, but on the R3 I could only start it in neutral once the switch was removed, which proved to be a bit annoying in some situations. If it was in gear it wouldn't turn the starter at all, regardless of the clutch lever position. But maybe the 400 is wired differently...
Which brings me to another idea. The concern is the bike starting in gear without the clutch being held, maybe we could leverage the kick stand down sensor somehow. It’s not going to be as simple as directly wiring it in, because that would it that the “stand is down” every time the clutch is let out. Probably a pretty big problem for anyone who wants to go anywhere. Can anyone think of any other downsides to having the clutch switch jumpered outside of starting in gear? Maybe we can find a fix in all of this if there are more problems.