One thing that I like about Wizard is the way absolutely extreme amounts of damage can be obtained with the stacking of traps and blades.
But one thing that I actually miss would be bosses that actually need such stackings.
Couldn't we have some simple, optional bosses with HUGE amounts of health? Maybe three different ones, with 50k, 250k and 1 million health respectively? Each could just be armed with simple wand-power spells, and drop feint/blade treasure cards. Maybe they could even heal up to full health after each round, so the wizards have to charge at them with literally everything they have.
Basically, just encourage people to actually play around with the extreme amounts of damage, and to aid each other in building up power.