Dear King on a wing,
Sure it had a strong impact.
The delay of the 787 influences directly the recruiting process due to the fact many routes QR wanted to start will have a delay , all the pilots that had to transit from Airbus class to the 777 or 787 will remain on the 320 and 321 for the time being.
So, for sure, something will move with the beginning of summer season if (hopefully) Boeing will be sufficently clever to convince NTSB and FAA about the corrective strategy about the well known problem of the lithium battery mounted in the 787.
I'm not the right person to give an estimation when the problem will be solved, but I'm sure, Boeing invested so much money in this project that they will find quickly a solution. I bet, at the beginning a temporary solution and for the future most probably a new design of the Lithium batteries with more ceramic gap among the cells and different containers
By the way, I hope to see u all in Doha one day.