Just a note on the simple reinforcement plate shown in an earlier post of mine;
Today I had a glance at it, and low and behold I noticed the top welds had worked themselves loose from the plate.
Now the plate was originally zinc-coated, so the welds probably hadn't penetrated enough, but stil goes to show there's a lot of movement down there.

I added new welds on the now fresh ground metal and also added another plate for more reinforcement.
I felt a difference in steering feel/tightness when taking the car for a spin afterwards.