Thank you for commenting and playing our game! Glad you enjoy it! It's good to see that you were able to learn about remembering the position of some incoming objects.
We'll take your comments on board if we continue to flesh this out. We certainly had ideas for different powerups and other features, but weren't able to get them in in the end. Increasing the difficulty going on is an interesting idea, will see if we can think up good ways to do this in the future.