With Wintertusk coming out I think at level 65 (if there is a level upgrade) that we should get new minions. The quest would lead you to fighting an upgraded version or your minion it would have about 1,950 health and no one could help you. Its a one on one match and once its defeated it would become your new minion card! Here are what I think they should be.
Fire- Scorched elemental Spells: Fire blade, sprite, Fire bats, Fire shark, fire trap, fire kraken, glacial shield, and natural attack. Health: 1,200
This is what I think please do this Kingsisle and the Wizard101 company I think that the minions should become stronger. To make it fun when I get there!
Aaron Drakewalker Level: 40 Fire wizard Secondary class: Balance
I also think new minions would be helpfull, but the battles you stated we would need to get them is to easy. With 1200 health I can kill it in one hit with my leviathan, storm lord, triton, or stormzilla. I do agree with the idea that it would be a one on one and you need to win the battle to get the spell, but it would need to have atleast 3,000