When you get a cascade with multiple 4-matches or 5-matches in the normal game, do you get multiple extra turns, or just one? I know it’s frustrating, but it’s consistent. The rewards are balanced around the current mechanics, and they’d probably have to rebalance them again if they changed the extra turn mechanic.
A leaderboard would be interesting. We’ve got a thread here on the forums where people have posted pictures of some of their best runs, but it would be nice to have that built into the game. I’d like for it to at least keep a record somewhere of your best, so you can tell if you’re improving or had a particularly good run.