I like the idea of concentration spells, and the fact it forces me to choose what spells to use in particular situations. I really disliked all the pre-buffing in previous versions that I believe it was introduced to combat.
But I hate how easy it is to lose concentration in BG3, and I think from what folk have said that's not per 5e RAW. If there were just, say, a single check per round if we'd taken damage that round it wouldn't be so bad I think.
