If Yamaha really wanted to increase profits...
They'd compete with the SV650 in the cheap, light, fun, and practical category. Maybe an FZ6 priced at $5999? Base the engine on the 600R instead of the R6 if need be, but keep the cost under 6k.
I mean, that's the only segment I can think of where they must be struggling. If the company is in trouble economically, then there's some internal problems to deal with. Yamaha is doing great in cruisers. R1s and R6s are everywhere. They nearly own the super-standard market with the VMAX and the FZ1. So their tourers are a bit weak, but most US touring riders would just buy a GL1800 or BMW anyway, so I can't blame them for not fighting a losing fight. But I think that they might stand a chance against the SV with an FZ6, if they keep the price down.