Thank for you playing and the suggestions! At first, I did allow clones to pickup scores (not powerups though). But that seemed weird and difficult to focus on the player. And I had to remove the clones colliding with each other because that would make the game easier and no need for power-ups at all! But I'm glad you brought this up as I'm planning to expand this game!
Maybe I will create a new powerup that temporarily lets clones collide! That could work I guess!