"Other surveys indicate that work-life-balance has gone out of the window since the pandemic with the lines between personal and work time blurred, and some staff want to return to way things used to be."
For me, WFH has been massively beneficial to my work-life balance, precisely because of how it's allowed the lines to not just blur but to be essentially invisible.
In before-Covid times, even if I finished work at 5pm on the dot, it'd still be at least 6pm before I got home and was able to start "family time", and it was rare that I'd be able to leave that early on a normal day - more usually I'd not get home until 7-8pm. And once I got home, there'd then be all the little tasks that needed to be done which would further eat into what little time I had left to spend with the family before they all started heading off to bed.
In contrast, WFH means I can "finish" (more accurately, pause) work earlier in the evening, get to spend more time with the family, and then seamlessly resume where I left off to take advantage of the quiet hours after they've all gone to bed and I'm able to put my night owl personality to good use. In addition, WFH also means that, during the day when I get up and walk away from the PC desk for a few minutes to stretch my legs and give my eyeballs a break, I can use that time to do those little tasks (loading the dishwasher, hanging out laundry, fixing a loose cabinet door hinge etc. etc.) so they aren't still on the to-do list later in the day.