I played the original a couple of times, but this would be my first EE run. I'd like to re-experience the game but also to focus on experiencing the new things that EE brings.
My original cast in IWD1 was something along the lines of a very conservative paladin + ranger + fighter + thief + wizard + cleric composition. Or perhaps I had a bard in one of the slots.
As I became more proficient in D&D, I started to experiment with having more casters and skipping pure-class rogues, as well as making everybody a viable melee combatant and viable archer, to avoid being overreliant on tactical positioning and rest and to limit reloads (which I see as a realism enhancement).
As far as I know, EE uses BG2-style 2E with some additional enhancements, including BG2-style dual wielding and some class kits.
So here are some questions:
1. Does the party leader have to be the party's designated talker or can I use different characters?
2. Do CHA, WILL and INT get a lot of checks in conversations? What are some base values one really wants to invest in?
3. Does anything really important in the game absolutely require a pure-class thief (even for flavour)?
4. Do any parts punish you too heavily for not having pure warriors? (E.g. long time without rest making a caster-heavy party too squishy to survive.)