This is (or at least was, don't know if it's still on the table) being discussed by ALPA and XJT mgmt. Just like FAs, the company isn't forcing anyone to go PT, its entirely voluntary. If someone can afford it and wants to be home for their kids baseball or soccer season, why force them to work a 90 hour line? PBS allows us to bid to work only whatever the company minimum is for the month, with PT guys/girls can work less if they so choose. Of course the company would never go along with it if they had to fork out the money for benefits or guarantee, so that all needs to be worked out before an agreement is submitted. Then, our elected leaders at ALPA need to agree before it is LOA'd or incorporated into our next contract.
As for the reserve guys, this could be a good thing for you too. If guys choose to go PT, that means less trips awarded to current lineholders. Maybe with these extra trips, PBS will build you a line and get you off reserve.
How is having more options for QOL to pilots a bad thing? FA's love being able to go PT if they want and are senior enough to hold it. I'm sure it'd go senior for pilots too, with senior guys who make plenty to live off of flying 2 trips a month.