I did not think it through but I will definitely try a high elf for the free cantrip. I just want to try the mage hand like in the gameplay. Sounds fun.
I will possibly try a druid, bard or a ranger if they actually made the class interesting.
The great thing about 5e is, in my opinion, all classes bring something unique to the table. The question is, how much of that will translate to BG3?
A Moon Druid, for example is really amazing. Their shapechange abilities are powerful and versatile. In combat, you can turn into a bear or panther to tank or shred your foes. But more than that, you have the ability to transform out of combat. Let's say there is a crack in a wall that you need to get by...well...transform into a spider and skitter through. But how much will BG3 accommodate that creativity? Only time will tell.
And I consider Lore Bards to be one of the best spellcasters in the game. Their Magical Secrets skill lets them pull spells from other classes, making them one of the most versatile casters. You want to have a bit of healing? Grab Aura of Vitality from the Paladin spells. You want a Familiar? Grab that from the Wizard list.
I admit, I don't have any play time with the ranger class.