Is it hard to make facebook your home screen for part of the time? That'd be pretty cool, hit a button to give your phone a huge facelift* as you walk out the office door each evening, or set it to switch automatically at 5pm and back at 9am.
It definitely would be possible by combining something like Tasker (https://play.google.com/store/apps/details?id=net.dinglisch....) with a custom application that swaps the home screen. Some of them automation apps support a scripting language too, so it might be possible without the custom app.
Sure, but the topic of the post is Facebook creating a home screen. If you find it inappropriate at work, then I guess you just don't use it at all, and you are not the target audience for the application.