Being able to have some spells going at the same time would be great. Like Barkskin and Flame blade. I see no reason they made it so you can't. You get one or the other. It kinda makes them (and a lot of other spells that require concentration) a bit pointless. I can cast one of them and then say "oh well, screw the rest of my spells. They require concentration so I'm basically done". Great idea. Yes I DO understand "game balance". You're limited to casting ONE spell per round (unless you're a sorcerer) AND you only get so many spells per day. So right there you are limited to begin with. Why hamstring casters even more? I'm not asking to turn spell casters into gods. I just find it very annoying for so many spells to be "concentration" based so you can't cast them. You choose ONE concentration spell and then that's it. You're done. Even the simple cantrip Guidance is concentration based. Lol. Why? Again, being able to cast Barkskin AND Flame Blade seems like a normal thing to do but you can't do it. Just one example. Mage Armor isn't concentration so why is Barkskin? I'm not trying to bash Larian on this one because I know it's a D&D thing and not them, but like I said before, Larian has made it's own rules adjustments to this game before so why not something with concentration as well?