What is a better way? Without Concentration, you could enable some very busted combos from casters. Many people already argue casters are already overpowered even WITH Concentration, so to imagine a system without this is strange to me.
It makes perfect sense for a spell like, for example, Hold Person to actively require mental focus and effort to sustain.
It would be great if Larian's version of Prone didn't mean auto-loss of Concentration and enemies didn't hurl 3d8 bombs every other turn.
