I disagree. He had inputs, but if the bike was so great (or so close to greatness, presuming it was) why did he go back to Yamaha?
He even lost Jeremy Burgess in the process - a man that had been with him for ages, and IMO had a lot of do more to do with both the development at Ducati and Yamaha than Rossi ever did.
Rossi was *never* competitive on the Duc, yet 3 seasons after his departure we find younger racers like Iannone and Dovisioso pushing for podium finishes?
Sorry - Rossi has been gone for too long for me to make the stretch that he had anything to do with the *recent* advances that allow for these younger riders to be so strong.
Case rode the Duc unquestionably well before Rossi thought of straddling it, and he did not benefit from the Rossi 'development', and I think it is a stretch to say Rossi's inputs of over 2 years ago have much to do with the current bike today. After all, they changed the ECU, tires, and so much more on every bike on the grid. I'm sure in some respects the factories had to make major tweaks to their bikes to adjust, and Ducati seems to be on the right track with that.
The fact remains that if Lorenzo were to become a World Champion on a Ducati, he did something Rossi could not do. A feat only Stoner was capable of (and before anything VR had any say on the bike).
I suspect Rossi wanted a Ducati that handled like a Yamaha, and in the end left because Ducati had a vision for the bike and it wasn't his. If it were good enough for Stoner, why wasn't it good enough for Rossi, etc? I'm sure when asked to pour more money in the Duc there were corporate bean counters asking the same thing. Why spend a couple million changing the bike? Hell, with that money bribe Stoner into coming back...
You do know VR has been back with Yamaha for going on three years right? Dovi and Iannone are not riding a 2012 nor a 2013 vintage Ducati. A lot of water under the bridge since Rossi. If JLo went to Ducati that is another year passed that Rossi had zero input.
Would you say Pedrosa and MM are also benefiting from Rossi being a one time Honda rider? Seems more than a stretch to me in either case...
Oh, and I too like that Suzuki has made such a strong showing with Vinales. I would like to see a fight to the end for the Championship, with more than just the familiar faces in the running.