Did you find yourself playing fast enough to where you didn't want to use the preview?
I'm not sure how I should deal with bomb damage. On the one hand, if it's 100% of base damage, it destroys tiles you can 1 shot. On the other hand, I don't want them to be useless on the tougher layers. I'm going to try changing bomb damage to start lower and build up faster as you upgrade it.
The game shows you how many resources you've collected, then combines those values with their multipliers, and then combines that with the total coin multiplier. I mostly wanted people to see how much value each gem gave during gameplay and have some animation with the numbers at the end.
I've decided to change the chunks of layers back to the original way (the method you're describing) since I've heard this feedback a few times.
Thanks for playing and the feedback!