Thanks. The typo has been fixed. It's good that DDR5 isn't just DDR4 with higher clocks. It will be interesting to see what gets done with the extra bandwidth over time.
I think it'll have a bigger effect on Ryzen CPU/APUs if the efficiency goes down which means lower latencies from the memory itself and more bandwidth/cycle.
Outside of that it's hard to tell what else it would be good for at the moment as you said.
One thing I hope happens is cheaper memory sooner rather than later as well as higher speeds closer to it's launch instead of the normal massive speed increases a year or two down the line.