Check out the changes to Level 223! It was 18 fire in 30 moves, and now it's 12 in 35 (thrilled about that!) 5JC (5 jewel colors used.) I copied Aileeniweeni/OpeningCeremony's photo above so we could see them side-by-side (hope that's OK?)
The level as it is now (on my device, anyway) is on the right. In addition to the extra fire, there used to be extra crates on the bottom and a larger window at the top. The level now has 2 little windows in the 3rd row from the bottom (where the 6 fire are in the 1st pic.) They made a lot of modifications--a good thing! So glad they scaled it back a bit, cuz the one time I played I didn't even get close! Awaiting energy to tackle again~