Everyone will see how Yamaha performs during this season in developing its engine for next season, especially with the help of Luca Marmorini for Yamaha and the other technicians at Yamaha. Because no one will stay at Yamaha for long if the Yamaha manufacturer does not develop well or meet the expectations of its own riders next season.
with only 3 months left, that will be a short time for yamaha to be able to develop their motorbike. even though they get unrestricted testing and free engine development, other manufacturers like ducati are already several steps ahead compared to yamaha. i don't think the help from luca marmorini was very helpful either, considering that they are specialists in f1 and matching with yamaha engines takes more time.
i bet that yamaha's performance will be bad again in the next season.
If they don't get a true engineer like Newey is in Formula 1 then it will be very difficult for Yamaha to improve their performance in such a short time remaining.I think they would be doing the right thing if they manage to hire a very successful head lf engineering for their team as I am sure things would improve.Most likely they won't be able to do miracles in such a short time but overall they will make little changes overtime which would result in a big increase in their performance.