well i think a cool idea would be to make new kits for the monk class. because there are many different types of monks then it is a pretty wide term. the new kits could be things like a sort of chinese shaolin monk who is focused on combat (much like the monk already in BG 2) and a more spiritual monk that calls on the gods to strike his opponents.
i dunno, these are just ideas i had.
got any more?

Hhhhm like everybody wants, a WILD MAGE ok!

What about a Few more clerics for the different gods,And a new druid who could shapeshift into Elemental, Pit Fiend etc etc

ninja/samurai characters would be kewl

Hey guys, i'm new here.
I think a Bladesinger would be nice.

Drow followers of Eillestre. thats the reason i didnt kill that drow in the drow city. i have a Drow ranger that follows Eillestre, so i spared him.

Lycanthrope ranger (ability to change into a werewolf, werebear, werepanter, etc...)
i think Beastmaster should give you an animal follower.
There are more great character classes, i just cant think of anymore right now.

Depends on whether or not 3rd ed will be implemented for BG3. If they're sticking to 2nd ed, race-specific kits like dladesingers, dwarven skalds, battleragers, would be nice.

In the very least, there should be more cleric kits for different gods and alignments. An maybe the option to be different subraces within the major races.. in other words, get bonuses for being drow in opposed to being a moonelf, etc. Could work for any race.. even humans.. any suggestions?

I think a anti paladin would be cool give playing evil some one to kick some ass

I recon being able to be a drow or something like that would be cool also kits for barbarians would be great

how about a half vampire race?
anyone seen the movie blade before? with wesley snipes?
very cool movie

Yeah definately anti-paladin. What about an Elimentalist type mage with specialisations in element types. Spells from a list like fireball, wall of fire , conjure fire elemental etc for fire. Iceball, wall of ice etc lightnig bolt meteor etc ...