I have been playing Terraria for a bit now, and to really spice up the gameplay, we could have dual-wielding. Yes, it would make the game easier, but there are some things that cannot be dual-wielded.
1.No Combinations of Bows and Swords.
2.No Boss-Summoning Items.
3.No Building Blocks.
I'm not sure of some other 'no dual wielding combination'
Let me know!