I like to see more spells add so you can do theme type decks. Even if it dup. same card type but with different spell effects. I think it would be a great way to get people to buy cards to add cards like this to main deck not just treasure cards.
Firebeatle, stormbeatle, etc...
It will give the deck more of a personal feel.
I love to make a lady judgement deck where she pops up for all my attack. ie hydra = she pops up and shoots all three hydra attacks from her scales