Suggestions Re: Spell Cards
I know that Rovio lurks here, so I thought I'd share this.
I deleted the game (as Dash Baconbuster), waited a few days, then reinstalled (and now play as Soar Baconbuster) for several reasons. First, I had figured out some things about hats and slingshots that I didn't realize on my first play through, because it isn't explained very well. I was buying hats kind of at random, instead of buying groups to level up the slingshot. I decided to start over.
But another reason I did this is because, once your birds have leveled up to 30 or 40, they give a much higher score than the spells -- so much so that the spells are a waste of money. When I'm going for a high score, there have been times that I've gotten free spell cards during game play and don't even use them. (Including the mighty eagle. I can actually make a LOT more points with leveled-up birds.)
It looks as though the spell multipliers are derived solely from the slingshot level. I understand that, but you (Rovio) might want to consider changing this. I'm not sure how you'd do it, but my ardor for spending money on gems, and thus on spells, begins to wane as my birds are leveled up higher and higher.
The only thing I'll buy now is a few chilis to take care of a stray, leftover pig. Aside from that, they're beginning to be not worth it.
Just a thought. The game has been out for quite a while now, and there are many players with birds in the 40's, 50's and 60's. Matching those up with spells that are less than half that isn't much of an incentive to spend money on gems to buy those spells.