Heat Ray could inflict a powerful fire debuff (that only Heat Ray would inflict) that makes enemies explode often whilst inflicted, critically hitting and causing the debuff to be inflicted upon enemies around the explosion. The base damage would should probably be reduced, as in my mind the new debuff would be the main source of damage. It also shouldn't inflict the debuff for too long, maybe around 5-6 seconds, as I don't want to encourage the player to only hit the target every once in a while.
Crystal Storm could have a bigger shard that, upon contact, sends 4-6 smaller shards. This bigger shard would have the same damage and speed as all other of Crystal Storm's projectiles, only difference being it's bigger, it doesn't bounce, and releases smaller shards. The smaller shards would be faster than the normal shards, and would pierce up to 10 enemies with 5% damage loss. The main shards could also receive pierce, but at a 10% damage loss. It would only pierce at maximum 10 times, with each time the shard hits the enemy it has a 25% to break. The smaller shards from the bigger shards wouldn't have this, they would always pierce 10 times. (Sorry if this explanation is confusing with how many times I used the word "shard")