Personally, I see this as a huge detriment for us, because while you do get some types of transfers, they are very few and far in between (least that was my experience my first time as yx.)
That's going to be a huge detriment because we're spending time away from regular operation at higher speeds, and the worse it'll get the longer this drags out. I feel that this should be on a case by case basis (those who only have a day or so of road posting to finish) to put us on the road incrementally. The days a lot of us are missing are utterly pointless, because they're days on lines we already posted repeatedly.
I do also wonder if they'll make us do schoolcar again if this lasts long enough as well.