The headband is great early on, but there are too many more interesting options for it to be a long term slot. I did play a low INT wizard once to abuse it (before it was nerfed) and it was fun, but tying up a head slot isn't worth it to me.
Between class abilities and how malleable stats are in 5e, stat items are different from BG 1-2, you weren't playing correctly if you didn't build characters around the loot you got.
Just bringing this up quick, but what are some good helmets? So far the only one I've found that seems to be any good is that circlet of fire thing.
For Wizards the bonus action one is probably the best, because spellcasting is off-book. I like the scorching ray circlet too.
Most of my wizards these days are using the lightning charge equipment though, which means I'll park Tav or Gale in a pool of water and let the charges and life tic over every turn.
I usually put the circlet of intellect on Shadowheart, figuring she benefits the most from better int saves, but then you get the trade-off of all the actual helmets she can use. Having a cleric who is a hard target is nice, since they're usually concentrating on things.
