I like concentration, mostly as it limits buff stacking that I felt have been a bane of D&D for a long time - by limiting some spells to one per cast we avoid that.
As Niara said, BG3 is particularly unfriendly to concentration spells, to the point that I rarely opt to use the defensive ones, or accept that they will likely disappear before the end of the turn, as NPC will target the caster on mass with unavoidable granades and surfaces.
Solasta had quite an OP homebrewed feat that would prevent concentration rolls from if caster took less then 10 damage. I feel BG3 would benefit of something like that, considering how common low unavoidable damage is.
