I had the original picade and found the instructions and set up very good. Purchased the newer version on Amazon last December. I found it a bit of a mess to be honest. I successfully put it together and got games working but it was not as smooth an experience as the first PiCade.
Also I went to put a Pi4 in place of my Pi 3 and it suddenly dawned on me that there was no allowance for cooling the Pi4. I found an old post about Pimoroni doing a new Hat with cooling combinded and emailed the poster (jon@pimoroni) but didn’t get a reply.
All in all if there’s further versions of the PiCade I won’t be as quick to purchase.