As suggested on the Factory News thread, thought it sounded an interesting topic. I'll start
1. New engine cases - keep them solid like the old ones (even if it means being a touch heavier than the competition), but get that e start motor under the crank like the sherco and beta. Also design them with an eye to fuel injection and electronic power valves in the future.
2. Suspension - follow tm's lead: KYB forks and in house made shock incorporating up to date features (within the confines of patent law
)
3. Floating disk on the front.
4. Keep it usable for trail riders and 'fun' racers. Well silenced and a sensible seat would be good. Personally, I would be happy to see the counter balancer return, although the power loss and weight gain wouldn't be for everyone.
5. Keep the fuel tank clear and please no coloured anodising on the wheel rims.