You bring up some valid points. I like the idea of animated battles. For the record, you can hit "Y" and move the camera around. I don't know if that's good enough for what you're asking as far as camera control or not. And as far as symbols go, the easiest way I can explain it is like the stock market. All values start at 10. The more colored creatures and leveled lands in that area will increase the value of those symbols.
So here's a strategy: lets say you're using an all blue deck. Buy blue symbols early. After you've established a few lands with blue creatures and leveled them up. The symbols you bought for 10 might be worth 17 now. You can sell them for a higher amount. Buy low, sell high. I hope that makes sense. It's the best way I can think to explain it.
If you're on the far left or the far right of an argument, you know what you've done? You've gone too far.