I've done something pretty much like this just now, and found this thread as a place to put my report..

In fact I went a little further, after investigating where space on my rootfs was being used, I created a /home/reclaim directory and started shunting over some of the bigger items from rootfs and symlinking back. I did this over an ssh connection from where the typing is a bit easier

Here's the result, shown as a couple of du commands. All the dirs like /home/reclaim/blah/blah/blah are symlinked to from the original location. Everything else under /usr/ and /var/ is untouched..

(/usr/local is not used right now and just there as a placeholder.)

As you can see from the first du command, I've reclaimed around 70M of rootfs in this way.

To test this setup I've rebooted, and checked that I can install an application via the app manager, and that's all. If I find any problems (I'm not really expecting to, but ... ) I'll report back in this thread.

I still have:

which seems like it might be a waste! I'm tempted to try moving the entirety of it over to /home, but I'll stop where I am for now. Information about the viability or otherwise of this is very welcome